ACRA HOTEL 4* ADORA HOTEL 3* AGAN HOTEL SIRKECI 3* AKGUN ISTANBUL HOTEL 3* AKKA HOTELS LUSH 4* AKKA HOTELS SUITES 4* ALA SOFIA HOTEL 3* ALBATROS PREMIER HOTEL 4* ALDEM HOTEL 3* ALL SEASONS HOTEL 4* ALMINA HOTEL & SPA 4* ALZER HOTEL 4* AMBER HOTEL 4* ANTEA HOTEL 4* ANTEA PALACE HOTEL SPA 4* ANTIK HOTEL 4* ANTUSA DESIGN HOTEL & SPA 4* ANTUSA PALACE HOTEL & SPA 4* APRILIS DELUXE 4* APRILIS HOTEL 4* ARDEN CITY HOTEL 4* ARMADA HOTEL OLD CITY 4* ARMAGRANDI SPINA HOTEL 4* ART CITY HOTEL 3* ARTEFES HOTEL 4* ARUNA HOTEL SULTANAHMET 4* ASKOC HOTEL 4* ATIK PALACE HOTEL 3* ATLANTIS ROYAL HOTEL 3* AVICENNA HOTEL 4* AYBAR HOTEL 4* BARIN HOTEL 3* BAZAAR HOTEL 3* BEETHOVEN HOTEL ISTANBUL 4* BEETHOVEN HOTEL PREMIUM 4* BEETHOVEN HOTEL SENFONI 4* BEKDAS HOTEL DELUXE 4* BERCE HOTEL 3* BERGAMA HOTEL 3* BEST WESTERN EMPIRE PALACE 4* BEYAZIT PALACE HOTEL 4* BIZ CEVAHIR HOTEL SULTANAHMET 4* BLUE ISTANBUL HOTEL 3* BLUE ISTANBUL HOTEL TAKSIM 3* BLUE MARMARAY HOTEL LALELI 3* BUDO HOTEL 3* BUKE HOTEL 4* BULVAR PALAS HOTEL 4* BUYUK KEBAN HOTEL 4* BVS BOSPHORUS PERA 4* CARLTON HOTEL 4* CATCH HOTEL SULTANAHMET 5* CELAL SULTAN HOTEL 4* CIHANGIR HOTEL 3* CIHANGIR PALACE 4* CITY CENTER HOTEL TAKSIM 4* CLARION HOTEL GOLDEN HORN 4* COMFORT LIFE HOTEL 4* CONRAD ISTANBUL BOSPHORUS 5* CONSTANTINOPOLIS HOTEL 3* CROWNE PLAZA ISTANBUL FLORYA 5* CROWNE PLAZA OLD CITY 5* CSK THE HALICH PORT HOTEL 4* CVK PARK BOSPHORUS HOTEL ISTANBUL 5* DALAN HOTEL 3* DANIS HOTEL ISTANBUL 4* DARKHILL HOTEL 4* DARKMEN HOTEL 3* DE MAREE HOTEL 3* DELTA HOTEL ISTANBUL 4* DELTA HOTELS BY MARRIOTT IST KAGITHANE 5* DELUXE GOLDEN HORN HOTEL 4* DEMPA HOTEL 3* DIAMOND ROYAL HOTEL 4* DIVAN ISTANBUL 5* DIVANI ALI HOTEL 4* DIVAS HOTEL 3* DOSSO DOSSI DOWNTOWN & SPA 5* DOSSO DOSSI LALELI 4* DOSSO DOSSI OLD CITY - SULTANAHMET 4* DOSSO DOSSI YENIKAPI 4* DOUBLETREE BY HILTON ISTANBUL TOPKAPI 5* DOWNTOWN SIRKECI HOTEL 4*+ DUNDAR HOTEL 3* EDIBE SULTAN HOTEL 3* EDITION OLD CITY HOTEL 4* ELITE WORLD COMFY (ex. ELITE WORLD PRESTIGE) 4* ELITE WORLD ISTANBUL 5* EMIRHAN INN HOTEL 4*+ ENDICAN BEYAZIT 4* ENDICAN SULTANAHMET 4* ERBOY HOTEL 4* ESCARDIN HOTEL 3* EVSEN HOTEL 3* FAVORI HOTEL 4* FER HOTEL 5* FUAT BEY PALACE 4* GALATOWER HOTEL 3* GEDIK PASA KONAGI 4* GENOVA HOTEL 4* GEZI BOSPHORUS HOTEL 5* GOLDEN CROWN HOTEL 3* GRAND ANT HOTEL 3* GRAND BEYAZIT HOTEL 4* GRAND DURMAZ HOTEL 4* GRAND EMIR HOTEL 3* GRAND ESEN HOTEL 3* GRAND HALIC HOTEL 4* GRAND ISKA HOTEL 4* GRAND KYBELE HOTEL 3* GRAND LIZA HOTEL 3* GRAND MAKEL HOTEL 5* GRAND MARK HOTEL 3* GRAND NAKI HOTEL 4* GRAND PAMIR HOTEL 4* GRAND SIRKECI HOTEL 4* GRAND VATAN HOTEL 5* GRAND WASHINGTON HOTEL 4* GRAND YAVUZ HOTEL 4* GRAZIELLA GOLD HOTEL S-class GREAT FORTUNE CONCEPT HOTEL Boutique GREAT FORTUNE DESIGN 4* GREAT FORTUNE HOTEL SPA 4* GREEN ANKA HOTEL 4* HALI HOTEL 3* HAYRIYE HANIM KONAGI 4* HHK DOWTOWN HOTEL 4* HILTON ISTANBUL BOMONTI HOTEL & CONFERENCE CENTER 5* HILTON ISTANBUL BOSPHORUS 5* HOLIDAY INN ISTANBUL CITY 5* HOLIDAY INN ISTANBUL OLD CITY 4* HOTEL ILKAY 4*+ HOTEL SABA ISTANBUL 3* HOTELLINO ISTANBUL 4* IBIS HOTEL SISLI 4* IMAGINE HOTEL 4* IPEK PALAS HOTEL 4* ISTANBUL HOLIDAY HOTEL 3* JOYWAY HOTEL 4* KALYON HOTEL ISTANBUL 4* KAYA MADRID HOTEL 3* KENSINGTON HOTEL ISTANBUL 3* KLAS HOTEL 4* KONAK HOTEL TAKSIM 4* LADY DIANA HOTEL 4* LALAHAN HOTEL 4* LAUSOS HOTEL SULTANAHMET 4* LAUSOS PALACE HOTEL SISLI 5* LE PETIT PALACE HOTEL 4* LEGACY OTTOMAN HOTEL 5* LEVNI HOTEL 4* LIKA HOTEL 2* LOKALIST ISTANBUL A TRIBUTE PORTFOLIO HOTEL BY MARRIOTT 5* MAGNIFICENT HOTEL 3* MALKOC HOTEL 3* MANORS HOTEL 4* MARBLE HOTEL 4* MARITIME HOTEL ISTANBUL 3* MATIAT HOTEL 4* MAY HOTEL 3* MEGARON HOTEL 3* MELAS HOTEL 5* MERCURE ISTANBUL SIRKECI 4* METROPOLITAN HOTELS BOSPHORUS 5* METROPOLITAN HOTELS TAKSIM 4* MIKLAGORD HOTEL 2* MILANO HOTEL & SPA 4* MOXY ISTANBUL BEYOGLU 5* MR CAS HOTELS 4* MUKARNAS PERA HOTEL 4* MUKARNAS TAKSIM HOTEL 4* MY ASSOS HOTEL 4* MY DREAM HOTEL 5* NEW EMIN HOTEL 4* NIDYA HOTEL GALATAPORT 4* NOVA PLAZA CRYSTAL 4* NOVA PLAZA ORION HOTEL 4* NOWY EFENDI HOTEL Boutique ORAN HOTEL 4* ORIENT EXPRESS HOTEL & SPA BY ORKA HOTELS 4* ORIENTBANK HOTEL AUTOGRAPH COLLECTION 5* ORKA ROYAL HOTEL 4* PERA PALACE HOTEL 5* PERA ROSE HOTEL 4* PERA TULIP HOTEL 4* PIERRE LOTI HOTEL 4* PIYA SPORT HOTEL 4* PREMIST HOTEL TAKSIM 3* PREMIST HOTELS SULTANAHMET 4* RADISSON BLU ISTANBUL PERA 5* RAMADA BY WYNDHAM ISTANBUL GOLDEN HORN 4* RAMADA BY WYNDHAM ISTANBUL MERTER 5* RAMADA BY WYNDHAM ISTANBUL PERA 5* RAMADA ISTANBUL TAKSIM 4* RAYELIN HOTELS OLD CITY 5* RAYELIN OLD TOWN 4* RIA SUITES BOUTIQUE 4* RING STONE HOTEL BOSPHORUS 4* RIXOS PERA 5* RIXOS TERSANE ISTANBUL 5* ROMANCE ISTANBUL HOTEL 5* ROOT KARAKOY HOTEL 4* ROYAL BOSPHORUS HOTEL 4* ROYAN HAGIA SOPHIA RADISSON INDIVIDUALS 5* SANTA SOPHIA HOTEL 3* SARNIC HOTEL 4* SARNIC PREMIER HOTEL 4* SELENAY HOTEL 3* SENATUS HOTEL 3* SERES OLD CITY HOTEL 3* SEVEN DAYS HOTEL 3* SINEM HOTEL 3* SKALION HOTEL 4* SOGUT HOTEL & SPA 4* SORRISO DUE HOTEL 4* SORRISO HOTEL 4* STONE HOTEL ISTANBUL 3* SULTAN HAMIT HOTEL 3* SULTANAHMET CESME HOTEL 3* SULTANAHMET INN HOTEL 3* SULTANIA HOTEL 5* SUN COMFORT HOTEL 3* SUR HOTEL 3* SURA HAGIA SOPHIA HOTEL & SPA 5* SUREYYA HOTEL 3* SWISSOTEL ISTANBUL THE BOSPHORUS 5* TAKSIM GONEN HOTEL 4* TAXIM HILL HOTEL 4* TAXIM TOWN HOTEL 4* TAYHAN HOTEL 3* THE BOSFOR HOTEL 3* THE BYZANTIUM HOTEL 4* THE GALATA ISTANBUL HOTEL MGALLERY BY SOFITEL 5* THE GIFT HOTEL 4* THE HALICH HOTEL 4* THE HOTELS GALATA 4* THE LAILA HOTEL 3* THE LOLA HOTEL 3* THE MARMARA TAKSIM 5* THE MERETTO HOTEL ISTANBUL 4* THE MILLION STONE HOTEL 4* THE PERAPORT HOTEL 3* THE REINA HOTEL 3* THE ZANADU ISTANBUL HOTEL 3* THEODIAN HOTEL 3* TILIA HOTEL OLD CITY 4* TREND HOTEL 4* TULIP CITY TAKSIM HOTEL 4* VENERA HOTEL 4* VERA TAKSIM HOTEL 4* VICTORY HOTEL & SPA 4* VILLA ZURICH HOTEL 4* VOGUE HOTEL SUPREME ISTANBUL 5* WOXX HOTEL 3* WYNDHAM ISTANBUL OLD CITY 5* YASMAK SULTAN HOTEL 4* YILSAM SULTANAHMET HOTEL 4* YUSUF PASA KONAGI HOTEL 4* ZAGREB HOTEL 4* ZEYNEP SULTAN HOTEL 3* ZURICH HOTEL 4*