• Login or Create Account

  • Currency

    QAR

You are booking hotel for more than 90 days

Bloom Ultracentral Studio

57 Property Photos
Bloom Ultracentral Studio
hotel image
hotel image

About Property

Bloom Ultracentral Studio offers accommodations in Bucharest, a 12-minute walk from Romanian Athenaeum and 0.6 miles from Buchar ...Read more

Amenities

  • Free Wi-Fi
  • Elevator/Lift
  • Smoke Detector
  • View All

Add dates to check availability

4.8
Excellent(20 RATINGS)
Sector 5

Sector 5

940 m drive to The National Museum of Art of Romania

Change Dates and Guest(s)

Check-in: 3 PM | Check-out: 11 AM

Check-in date
Check-out date
Rooms, Guests

Bloom Ultracentral Studio Location

Address: Strada Eforie 2 apartament 13

940 m drive to The National Museum of Art of Romania

NEARBY LANDMARKS

    University of Bucharest

    5 min walk

    Dâmbovița River

    8 min walk

    The National Museum of Art of Romania

    11 min walk

    Palace of Parliament

    1.5 km

    Romanian Athenaeum

    1.9 km

    Important information

    • Please check detailed rules while reviewing your booking

    • Languages Spoken by Staff

      English, Italian and Romanian

    Hotels in Bucharest of Same Star Category

    Luxury 1 bedroom apartment, Bucharest

    Luxury 1 bedroom apartment

     0 -1 0 1 2 3 4

    QAR 214

    Per Night

    Sector 5

    Panoramic Cișmigiu Park, Bucharest

    Panoramic Cișmigiu Park

     0 -1 0 1 2 3 4

    QAR 253

    Per Night

    Sector 5

    Downtown Scandinavian Igloo with Jacuzzi&Garden, Bucharest

    Downtown Scandinavian Igloo with Jacuzzi&Garden

     0 -1 0 1 2 3 4

    QAR 610

    Per Night

    Sector 2

    Park Lake Apartment, Bucharest

    Park Lake Apartment

     0 -1 0 1 2 3 4

    QAR 198

    Per Night

    Sector 3

    Cozy Flat - Grivitei, Bucharest

    Cozy Flat - Grivitei

     0 -1 0 1 2 3 4

    QAR 254

    Per Night

    Sector 1

    Concept Studio Haven, Bucharest

    Concept Studio Haven

     0 -1 0 1 2 3 4

    QAR 238

    Per Night

    Sector 6

    Downtown friendly studio, Bucharest

    Downtown friendly studio

     0 -1 0 1 2 3 4

    QAR 368

    Per Night

    Sector 5

    Victoriei54YOU, Bucharest

    Victoriei54YOU

     0 -1 0 1 2 3 4

    QAR 96

    Per Night

    Sector 3

    Baba Rent House F3 & F4, Bucharest

    Baba Rent House F3 & F4

     0 -1 0 1 2 3 4

    QAR 198

    Per Night

    Sector 6

    National Arena Mega Mall Mirina Studio, Bucharest

    National Arena Mega Mall Mirina Studio

     0 -1 0 1 2 3 4

    QAR 285

    Per Night

    Sector 3

    Other Popular Hotels in Bucharest

    Central Residence Apartment 920, Bucharest

    Central Residence Apartment 920

     0 -1 0 1 2 3 4

    QAR 258

    Per Night

    Sector 5

    Bohemian Central Concept Studio, Bucharest

    Bohemian Central Concept Studio

     0 -1 0 1 2 3 4

    QAR 269

    Per Night

    Sector 5

    Color Apartments Eugen Carada St, Bucharest

    Color Apartments Eugen Carada St

     0 -1 0 1 2 3 4

    QAR 174

    Per Night

    Sector 3

    Central Residence Apartment 724, Bucharest

    Central Residence Apartment 724

     0 -1 0 1 2 3 4

    QAR 258

    Per Night

    Sector 5

    Carmen Housing 2, Bucharest

    Carmen Housing 2

     0 -1 0 1 2 3 4

    QAR 164

    Per Night

    Sector 5

    Harmony Studio, Bucharest

    Harmony Studio

     0 1 2 3 0 1 2 3 4

    QAR 185

    Per Night

    Sector 3

    Apartament, Ultracentral, zona Piata Universitatii, Bucharest

    Apartament, Ultracentral, zona Piata Universitatii

     0 -1 0 1 2 3 4

    QAR 186

    Per Night

    Sector 2

    Cosy studio, Bucharest

    Cosy studio

     0 -1 0 1 2 3 4

    QAR 372

    Per Night

    Sector 5

    Bucharest Central D Apartment, Bucharest

    Bucharest Central D Apartment

     0 1 2 3 0 1 2 3 4

    QAR 221

    Per Night

    Sector 5

    DeLuxe Jacuzzi & Baldaquin Studio, Bucharest

    DeLuxe Jacuzzi & Baldaquin Studio

     0 1 2 3 0 1 2 3 4

    QAR 269

    Per Night

    Sector 6

    Top Places to Stay in Bucharest ( Popular Areas )

    Premium Hotels in Bucharest

    Grand Hotel Continental Bucuresti, Bucharest

    Grand Hotel Continental Bucuresti

     0 1 2 3 4 0 1 2 3 4

    QAR 752

    Per Night

    Sector 3

    Conacul Coroanei Luxury Boutique, Bucharest

    Conacul Coroanei Luxury Boutique

     0 1 2 3 4 0 1 2 3 4

    QAR 567

    Per Night

    Sector 2

    Park Inn by Radisson Bucharest Hotel & Residence, Bucharest

    Park Inn by Radisson Bucharest Hotel & Residence

     0 1 2 3 0 1 2 3 4

    QAR 440

    Per Night

    Sector 1

    DoubleTree by Hilton Bucharest Unirii Square, Bucharest

    DoubleTree by Hilton Bucharest Unirii Square

     0 1 2 3 0 1 2 3 4

    QAR 388

    Per Night

    Sector 3

    YMY Boutique Residence, Bucharest

    YMY Boutique Residence

     0 1 2 3 0 1 2 3 4

    QAR 364

    Per Night

    Sector 1

    Pullman Bucharest, Bucharest

    Pullman Bucharest

     0 1 2 3 0 1 2 3 4

    QAR 316

    Per Night

    Sector 1

    Areas Preferred by Indians to Stay in Bucharest

    Hotels near Popular Attractions in Bucharest

    Show More

    Properties in Bucharest

    Four Star Hotels in Bucharest

    The Address Bucharest, Bucharest

    The Address Bucharest

     0 1 2 3 0 1 2 3 4

    QAR 530

    Per Night

    Sector 2

    Old Town apartments Brătianu - Pumo Properties, Bucharest

    Old Town apartments Brătianu - Pumo Properties

     0 1 2 3 0 1 2 3 4

    QAR 282

    Per Night

    Sector 2

    Bălcești apartments - Pumo Properties, Bucharest

    Bălcești apartments - Pumo Properties

     0 1 2 3 0 1 2 3 4

    QAR 747

    Per Night

    Sector 3

    Fountain Bloom, Bucharest

    Fountain Bloom

     0 1 2 3 0 1 2 3 4

    QAR 857

    Per Night

    Sector 3

    Ramada Plaza by Wyndham Bucharest Convention Center, Bucharest

    Ramada Plaza by Wyndham Bucharest Convention Center

     0 1 2 3 0 1 2 3 4

    QAR 567

    Per Night

    Sector 1

    Courtyard by Marriott Bucharest Floreasca, Bucharest

    Courtyard by Marriott Bucharest Floreasca

     0 1 2 3 0 1 2 3 4

    QAR 466

    Per Night

    Sector 2

    CHANTTAL Luxury - BOUTIQUE, Bucharest

    CHANTTAL Luxury - BOUTIQUE

     0 1 2 3 0 1 2 3 4

    QAR 301

    Per Night

    Sector 3

    Harmony Residence, Bucharest

    Harmony Residence

     0 1 2 3 0 1 2 3 4

    QAR 329

    Per Night

    Sector 3

    Garsoniera LUX Tineretului, Bucharest

    Garsoniera LUX Tineretului

     0 1 2 3 0 1 2 3 4

    QAR 198

    Per Night

    Sector 4

    Ganzo Boutique Hotel, Bucharest

    Ganzo Boutique Hotel

     0 1 2 3 0 1 2 3 4

    QAR 315

    Per Night

    Sector 3

    Four Star Hotels in Bucharest

    Aiastay Bucharest River Apartments, Bucharest

    Aiastay Bucharest River Apartments

     0 1 2 3 0 1 2 3 4

    QAR 443

    Per Night

    Sector 5

    Bucharest Central Apartments - Shabbat Friendly, Bucharest

    Bucharest Central Apartments - Shabbat Friendly

     0 1 2 3 0 1 2 3 4

    QAR 751

    Per Night

    Sector 3

    Bucharest City Center Villa - Shabbat Friendly, Bucharest

    Bucharest City Center Villa - Shabbat Friendly

     0 1 2 3 0 1 2 3 4

    QAR 203

    Per Night

    Sector 3

    Les Jardins Carol, Bucharest

    Les Jardins Carol

     0 1 2 3 0 1 2 3 4

    QAR 218

    Per Night

    Sector 5

    VISIONAPARTMENTS Bucharest - self check-in, Bucharest

    VISIONAPARTMENTS Bucharest - self check-in

     0 1 2 3 0 1 2 3 4

    QAR 409

    Per Night

    Sector 5

    Tomis Garden Bucuresti, Bucharest

    Tomis Garden Bucuresti

     0 1 2 3 0 1 2 3 4

    QAR 448

    Per Night

    Sector 2

    Central Bucharest Residence - Universitate, Bucharest

    Central Bucharest Residence - Universitate

     0 1 2 3 0 1 2 3 4

    QAR 278

    Per Night

    Sector 3

    Comfort & Style - KISELEFF - ARCUL DE TRIUMF -, Bucharest

    Comfort & Style - KISELEFF - ARCUL DE TRIUMF -

     0 1 2 3 0 1 2 3 4

    QAR 305

    Per Night

    Sector 1

    Ghencea Residence 158 L1, Bucharest

    Ghencea Residence 158 L1

     0 1 2 3 0 1 2 3 4

    QAR 274

    Per Night

    Sector 6

    JN Boutique Hotel, Bucharest

    JN Boutique Hotel

     0 1 2 3 0 1 2 3 4

    QAR 370

    Per Night

    Sector 5

    Four Star Hotels in Bucharest

    NorthApartments, Bucharest

    NorthApartments

     0 1 2 3 0 1 2 3 4

    QAR 374

    Per Night

    Sector 1

    Vânători Nest - 2 room - Pumo properties, Bucharest

    Vânători Nest - 2 room - Pumo properties

     0 1 2 3 0 1 2 3 4

    QAR 403

    Per Night

    Sector 5

    Bucharest City Center Apartment, Bucharest

    Bucharest City Center Apartment

     0 1 2 3 0 1 2 3 4

    QAR 1,157

    Per Night

    Sector 3

    Central Residence Apartment 505, Bucharest

    Central Residence Apartment 505

     0 1 2 3 0 1 2 3 4

    QAR 288

    Per Night

    Sector 5

    Central Residence Apartment 1012, Bucharest

    Central Residence Apartment 1012

     0 1 2 3 0 1 2 3 4

    QAR 285

    Per Night

    Sector 5

    Gabi - Chic Apt with Parking close to Veranda Mall, Bucharest

    Gabi - Chic Apt with Parking close to Veranda Mall

     0 1 2 3 0 1 2 3 4

    QAR 555

    Per Night

    Sector 2

    Bucharest Central EE Apartment, Bucharest

    Bucharest Central EE Apartment

     0 1 2 3 0 1 2 3 4

    QAR 214

    Per Night

    Sector 5

    MIRO HOUSE, Bucharest

    MIRO HOUSE

     0 1 2 3 0 1 2 3 4

    QAR 292

    Per Night

    Sector 2

    ONE Luxury Apartments - Verdi Park, Bucharest

    ONE Luxury Apartments - Verdi Park

     0 1 2 3 0 1 2 3 4

    QAR 637

    Per Night

    Sector 2

    D&E Apart, Bucharest

    D&E Apart

     0 1 2 3 0 1 2 3 4

    QAR 333

    Per Night

    Sector 2

    Five Star Hotels in Bucharest

    Grand Hotel Bucharest, Bucharest

    Grand Hotel Bucharest

     0 1 2 3 4 0 1 2 3 4

    QAR 653

    Per Night

    Sector 2

    Grand Hotel Continental Bucuresti, Bucharest

    Grand Hotel Continental Bucuresti

     0 1 2 3 4 0 1 2 3 4

    QAR 752

    Per Night

    Sector 3

    Sheraton Bucharest Hotel, Bucharest

    Sheraton Bucharest Hotel

     0 1 2 3 4 0 1 2 3 4

    QAR 624

    Per Night

    Sector 1

    The Marmorosch Bucharest, Autograph Collection, Bucharest

    The Marmorosch Bucharest, Autograph Collection

     0 1 2 3 4 0 1 2 3 4

    QAR 1,285

    Per Night

    Sector 3

    Conacul Coroanei Luxury Boutique, Bucharest

    Conacul Coroanei Luxury Boutique

     0 1 2 3 4 0 1 2 3 4

    QAR 567

    Per Night

    Sector 2

    JW Marriott Bucharest Grand Hotel, Bucharest

    JW Marriott Bucharest Grand Hotel

     0 1 2 3 4 0 1 2 3 4

    QAR 724

    Per Night

    Sector 5

    Epoque Hotel - Relais & Chateaux, Bucharest

    Epoque Hotel - Relais & Chateaux

     0 1 2 3 4 0 1 2 3 4

    QAR 1,102

    Per Night

    Sector 5

    Corinthia Grand Hotel Du Boulevard Bucharest, Bucharest

    Corinthia Grand Hotel Du Boulevard Bucharest

     0 1 2 3 4 0 1 2 3 4

    QAR 1,313

    Per Night

    Sector 5

    Hotel Casa Capsa, Bucharest

    Hotel Casa Capsa

     0 1 2 3 4 0 1 2 3 4

    QAR 420

    Per Night

    Sector 5

    InterContinental Athénée Palace Bucharest by IHG, Bucharest

    InterContinental Athénée Palace Bucharest by IHG

     0 1 2 3 4 0 1 2 3 4

    QAR 1,660

    Per Night

    Sector 3

    Hotels By Star Category in Bucharest

    Show More

    Hotels in Nearby Cities

    Hotels Near By Bloom Ultracentral Studio

    Central Residence Apartment 920, Bucharest

    Central Residence Apartment 920

     0 -1 0 1 2 3 4

    QAR 258

    Per Night

    Sector 5

    Hotel Cismigiu, Bucharest

    Hotel Cismigiu

     0 1 2 3 0 1 2 3 4

    QAR 498

    Per Night

    Sector 5

    Plaza Residence Studio 79, Bucharest

    Plaza Residence Studio 79

     0 1 2 0 1 2 3 4

    QAR 266

    Per Night

    Sector 6

    Manhattan Studio in Bucharest, Bucharest

    Manhattan Studio in Bucharest

     0 -1 0 1 2 3 4

    QAR 292

    Per Night

    Sector 6

    BlueStudio, Bucharest

    BlueStudio

     0 -1 0 1 2 3 4

    QAR 305

    Per Night

    Sector 6

    Carmen Housing 2, Bucharest

    Carmen Housing 2

     0 -1 0 1 2 3 4

    QAR 164

    Per Night

    Sector 5

    Urban Retreat with Balcony at Exigent Plaza - 06, Bucharest

    Urban Retreat with Balcony at Exigent Plaza - 06

     0 1 2 3 0 1 2 3 4

    QAR 245

    Per Night

    Sector 6

    Central Residence Apartment 827, Bucharest

    Central Residence Apartment 827

     0 1 2 3 0 1 2 3 4

    QAR 258

    Per Night

    Sector 5

    Royal - Luxury Apartment B - Old City - Victoriei, Bucharest

    Royal - Luxury Apartment B - Old City - Victoriei

     0 -1 0 1 2 3 4

    QAR 430

    Per Night

    Sector 5

    Plaza View, Bucharest

    Plaza View

     0 -1 0 1 2 3 4

    QAR 291

    Per Night

    Sector 6

    Cosy studio, Bucharest

    Cosy studio

     0 -1 0 1 2 3 4

    QAR 372

    Per Night

    Sector 5

    Baba Rent House F3 & F4, Bucharest

    Baba Rent House F3 & F4

     0 -1 0 1 2 3 4

    QAR 198

    Per Night

    Sector 6

    VISIONAPARTMENTS Bucharest – self check-in, Bucharest

    VISIONAPARTMENTS Bucharest – self check-in

     0 1 2 3 0 1 2 3 4

    QAR 385

    Per Night

    Sector 5

    Central Residence Apartment 1012, Bucharest

    Central Residence Apartment 1012

     0 1 2 3 0 1 2 3 4

    QAR 285

    Per Night

    Sector 5

    Vulcan Residences - Premium Apartments, Bucharest

    Vulcan Residences - Premium Apartments

     0 -1 0 1 2 3 4

    QAR 364

    Per Night

    Sector 5

    West Plaza Residence, Bucharest

    West Plaza Residence

     0 1 2 0 1 2 3 4

    QAR 276

    Per Night

    Sector 6

    Old Town - Victoriei 25 - UrbanNest Bucharest, Bucharest

    Old Town - Victoriei 25 - UrbanNest Bucharest

     0 -1 0 1 2 3 4

    QAR 249

    Per Night

    Sector 5

    Central Address Apartment 811 B2, Bucharest

    Central Address Apartment 811 B2

     0 1 2 0 1 2 3 4

    QAR 258

    Per Night

    Sector 5

    Central Residence Apartment 927, Bucharest

    Central Residence Apartment 927

     0 -1 0 1 2 3 4

    QAR 258

    Per Night

    Sector 5

    Hotel Carpati Imparatul Romanilor, Bucharest

    Hotel Carpati Imparatul Romanilor

     0 0 1 2 3 4

    QAR 166

    Per Night

    Sector 5

    Good Living Bucharest, Bucharest

    Good Living Bucharest

     0 1 2 0 1 2 3 4

    QAR 530

    Per Night

    Sector 5

    Continental Forum Bucuresti Palatul Parlamentului, Bucharest

    Continental Forum Bucuresti Palatul Parlamentului

     0 1 2 3 0 1 2 3 4

    QAR 383

    Per Night

    Sector 5

    Hotel Maison Orient, Bucharest

    Hotel Maison Orient

     0 1 2 3 0 1 2 3 4

    QAR 378

    Per Night

    Sector 5

    Capitol Hotel Bucharest, Bucharest

    Capitol Hotel Bucharest

     0 1 2 3 0 1 2 3 4

    QAR 362

    Per Night

    Sector 5

    Bohemian Central Concept Studio, Bucharest

    Bohemian Central Concept Studio

     0 -1 0 1 2 3 4

    QAR 269

    Per Night

    Sector 5

    Classic Stay next to Victoriei Avenue, Bucharest

    Classic Stay next to Victoriei Avenue

     0 -1 0 1 2 3 4

    QAR 416

    Per Night

    Sector 5

    Studio D&G - cozy place, Bucharest

    Studio D&G - cozy place

     0 1 2 3 0 1 2 3 4

    QAR 239

    Per Night

    Sector 5

    XOX Comfort Giurgiului, Bucharest

    XOX Comfort Giurgiului

     0 1 2 0 1 2 3 4

    QAR 333

    Per Night

    Sector 5

    Studio Moghioros rezidence 2, Bucharest

    Studio Moghioros rezidence 2

     0 -1 0 1 2 3 4

    QAR 293

    Per Night

    Sector 6

    Hotel Mon Caprice, Bucharest

    Hotel Mon Caprice

     0 1 2 0 1 2 3 4

    QAR 186

    Per Night

    Sector 5

    Quiet Garden Ground Floor, Bucharest

    Quiet Garden Ground Floor

     0 1 2 0 1 2 3 4

    QAR 158

    Per Night

    Sector 6

    Free parking Downtown Apartment Boutique Green Garden Unirii, Bucharest

    Free parking Downtown Apartment Boutique Green Garden Unirii

     0 1 2 0 1 2 3 4

    QAR 302

    Per Night

    Sector 5

    Deluxe Cișmigiu Park, Bucharest

    Deluxe Cișmigiu Park

     0 1 2 0 1 2 3 4

    QAR 277

    Per Night

    Sector 5

    Parliament Central Apartment, Bucharest

    Parliament Central Apartment

     0 1 2 0 1 2 3 4

    QAR 341

    Per Night

    Sector 5

    Panoramic Cișmigiu Park, Bucharest

    Panoramic Cișmigiu Park

     0 -1 0 1 2 3 4

    QAR 253

    Per Night

    Sector 5

    Garsoniera de LUX si eleganta Drumul Taberei, Bucharest

    Garsoniera de LUX si eleganta Drumul Taberei

     0 1 2 3 0 1 2 3 4

    QAR 190

    Per Night

    Sector 6

    Oasis Studio Central City, Bucharest

    Oasis Studio Central City

     0 1 2 3 0 1 2 3 4

    QAR 299

    Per Night

    Sector 5

    Bucharest Central DD Apartment, Bucharest

    Bucharest Central DD Apartment

     0 1 2 3 0 1 2 3 4

    QAR 234

    Per Night

    Sector 5

    Golden Rose 1 BR APARTMENT in One Cotroceni, Bucharest

    Golden Rose 1 BR APARTMENT in One Cotroceni

     0 1 2 3 0 1 2 3 4

    QAR 319

    Per Night

    Sector 6

    Oldtown Parliament self check in, Bucharest

    Oldtown Parliament self check in

     0 1 2 3 0 1 2 3 4

    QAR 659

    Per Night

    Sector 5

    ONE Cotroceni Park Apartments, Bucharest

    ONE Cotroceni Park Apartments

     0 1 2 3 0 1 2 3 4

    QAR 473

    Per Night

    Sector 6

    OldTown Studio, Bucharest

    OldTown Studio

     0 1 2 0 1 2 3 4

    QAR 227

    Per Night

    Sector 5

    B.L Apartaments, Bucharest

    B.L Apartaments

     0 1 2 3 0 1 2 3 4

    QAR 395

    Per Night

    Sector 5

    Casa DARYA-24h Check-in, Bucharest

    Casa DARYA-24h Check-in

     0 1 2 0 1 2 3 4

    QAR 178

    Per Night

    Sector 5

    Bohemian Apartment - Center of Bucharest, Bucharest

    Bohemian Apartment - Center of Bucharest

     0 -1 0 1 2 3 4

    QAR 475

    Per Night

    Sector 5

    Vila 2, Bucharest

    Vila 2

     0 -1 0 1 2 3 4

    QAR 158

    Per Night

    Sector 6

    Metropolitan Marvel, Bucharest

    Metropolitan Marvel

     0 -1 0 1 2 3 4

    QAR 491

    Per Night

    Sector 6

    Classy Apartment Unirii Square, Bucharest

    Classy Apartment Unirii Square

     0 -1 0 1 2 3 4

    QAR 160

    Per Night

    Sector 5

    Old Town Spacious Apartment, Bucharest

    Old Town Spacious Apartment

     0 1 2 3 0 1 2 3 4

    QAR 244

    Per Night

    Sector 5

    Color Apartment Regina Elisabeta 23, Bucharest

    Color Apartment Regina Elisabeta 23

     0 -1 0 1 2 3 4

    QAR 198

    Per Night

    Sector 5

    Best Hotels in Cities Nearby Bucharest

    Emir Palace, Bucharest

    Emir Palace

     0 1 2 3 0 1 2 3 4

    QAR 269

    Per Night

    Sector 4

    Ramada by Wyndham Bucharest Otopeni Airport, Bucharest

    Ramada by Wyndham Bucharest Otopeni Airport

     0 1 2 3 0 1 2 3 4

    QAR 415

    Per Night

    Otopeni Airport

    Mari Vila Hotel, Bucharest

    Mari Vila Hotel

     0 1 2 3 0 1 2 3 4

    QAR 342

    Per Night

    Sector 3

    RIN Airport, Bucharest

    RIN Airport

     0 1 2 3 0 1 2 3 4

    QAR 272

    Per Night

    Otopeni Airport

    Hilton Garden Inn Bucharest Airport, Bucharest

    Hilton Garden Inn Bucharest Airport

     0 1 2 3 0 1 2 3 4

    QAR 438

    Per Night

    Otopeni Airport

    Vienna House Easy by Wyndham Bucharest Airport, Bucharest

    Vienna House Easy by Wyndham Bucharest Airport

     0 1 2 3 0 1 2 3 4

    QAR 456

    Per Night

    Otopeni Airport

    Hotel Tecadra, Bucharest

    Hotel Tecadra

     0 1 2 3 0 1 2 3 4

    QAR 430

    Per Night

    Pipera

    More info About Bloom Ultracentral Studio