ABEL HOTEL 3* ACRA HOTEL 4* AGAN HOTEL 3* AGORA LIFE HOTEL 4* AKGUN ISTANBUL HOTEL 5* ALA SOFIA HOTEL 3* ALBATROS HAGIA SOPHIA HOTEL 4* ALBATROS PREMIER HOTEL 4* ALMINA HOTEL 4* ALZER HOTEL 4* AMBER HOTEL 4* AMIRAL PALACE 4* ANTEA HOTEL 4* ANTEA PALACE HOTEL SPA 4* ANTHEMIS HOTEL 4* ANTIK HOTEL 4* ANTIS HOTEL 4* ANTUSA DESIGN HOTEL & SPA 4* ANTUSA PALACE HOTEL & SPA 4* APRILIS DELUXE 4* APRILIS GOLD HOTEL 4* APRILIS HOTEL 4* ARDEN CITY HOTEL 4* ARENA HOTEL ISTANBUL 4* ARMADA HOTEL OLD CITY 4* ARMAGRANDI SPINA HOTEL 4* ART CITY HOTEL 3* ARTEFES HOTEL 4* ARUNA HOTEL SULTANAHMET 4* ASKOC HOTEL 4* ATLANTIS ROYAL HOTEL 3* AVICENNA HOTEL 4* BALPETEK HOTEL 3* BARIN HOTEL 3* BASILEUS HOTEL 3* BEETHOVEN HOTEL & SUIT 3* BEETHOVEN HOTEL ISTANBUL 4* BEETHOVEN HOTEL PREMIUM 4* BEETHOVEN HOTEL SENFONI 4* BEKDAS HOTEL DELUXE 4* BERCE HOTEL 3* BEST WESTERN EMPIRE PALACE 4* BLACK TULIP HOTEL 4* BLUE ISTANBUL HOTEL 3* BOUTIQUE SAINT SOPHIA ISTANBUL 5* BUDO HOTEL 3* BUHARA OLD CITY 3* CATCH HOTEL SULTANAHMET 5* CELAL AGA KONAGI METRO HOTEL 5* CELAL SULTAN HOTEL 4* CENTRUM HOTEL 3* CIHANGIR PALACE 4* CITY CENTER HOTEL TAKSIM 4* COMFORT LIFE HOTEL 4* CONRAD ISTANBUL BOSPHORUS 5* CONSTANTINOPOLIS HOTEL 3* CRONTON DESIGN HOTEL 4* CROWNE PLAZA ISTANBUL FLORYA 5* CROWNE PLAZA ISTANBUL HARBIYE 5* CROWNE PLAZA OLD CITY 5* CVK PARK BOSPHORUS HOTEL ISTANBUL 5* DARA HOTEL 3* DARKHILL HOTEL 4* DARU SULTAN HOTELS GALATA 5* DE MAREE HOTEL 3* DELTA HOTEL ISTANBUL 4* DELUXE GOLDEN HORN HOTEL 4* DELUXE NEWPORT HOTEL 3* DEMIRAY HOTEL 5* DEMPA HOTEL 3* DIAMOND ROYAL HOTEL 4* DIVAN ISTANBUL 5* DIVANI ALI HOTEL 4* DIVAS HOTEL 3* DOSSO DOSSI DOWNTOWN 5* DOSSO DOSSI LALELI 3* DOSSO DOSSI OLD CITY 4* DOSSO DOSSI YENIKAPI 3* DOUBLE TREE BY HILTON ISTANBUL SIRKECI 5* DOUBLETREE BY HILTON ISTANBUL TOPKAPI 5* EDIBE SULTAN HOTEL 3* ELITE WORLD COMFY (ex. ELITE WORLD PRESTIGE) 4* ELITE WORLD ISTANBUL 5* ENDICAN BEYAZIT 4* ENDICAN SULTANAHMET 4* ERBOY HOTEL 4* ERESIN HOTELS TOPKAPI 5* ESER PREMIUM HOTEL 5* EUROSTARS HOTEL OLD CITY 4* EVSEN HOTEL (ADULT ONLY) 3* FAROS OLD CITY 4* FER HOTEL 5* FOUR POINTS BY SHERATON ISTANBUL 5* FUAT BEY PALACE 4* GEDIK PASA KONAGI S-class GENOVA HOTEL 4* GLORIOUS HOTEL ISTANBUL 4* GOLDEN AGE HOTEL 4* GOLDEN CITY HOTEL 4* GOLDEN CROWN HOTEL 3* GOLDEN HILL HOTEL DOWNTOWN 5* GOLDEN HORN ISTANBUL 3* GOLDEN HORN SIRKECI 4* GOLDEN SAND HOTEL 3* GRAND ANT HOTEL 3* GRAND BEYAZIT HOTEL 4* GRAND HALIC HOTEL 4* GRAND HILARIUM HOTEL 4* GRAND HOTEL GULSOY 4* GRAND LIZA HOTEL 3* GRAND MAKEL HOTEL 5* GRAND MARCELLO HOTEL 4* GRAND MARK HOTEL 3* GRAND PAMIR HOTEL 4* GRAND SIRKECI HOTEL 4* GRAND WASHINGTON HOTEL 4* GRAND YAVUZ HOTEL 4* GREAT FORTUNE DESIGN 4* HALI HOTEL 3* HHK DOWTOWN HOTEL 4* HILTON ISTANBUL BOMONTI HOTEL & CONFERENCE CENTER 5* HILTON ISTANBUL BOSPHORUS 5* HOTEL MOSAIC 4* IKBAL DELUXE HOTEL 4* IMAGINE HOTEL 4* IPEK PALAS HOTEL 4* ISTANBUL ROYAL HOTEL 4* JAFF HOTELS NISANTASI 4* JW MARRIOTT ISTANBUL MARMARA SEA 5* KALYON HOTEL ISTANBUL 4* KAYA MADRID HOTEL 3* KLAS HOTEL 4* KUNLUN KENSINGTON HOTEL 4* LADY DIANA HOTEL 4* LE MeRIDIEN ISTANBUL ETILER 5* LE PETIT PALACE HOTEL 4* LEGACY OTTOMAN HOTEL 5* LEVNI HOTEL & SPA 5* MAGNIFICENT HOTEL 3* MALKOC HOTEL 3* MANESOL OLDCITY BOSPHORUS 4* MANGANA KONAK 4* MANORS HOTEL 4* MARMARAY HOTEL YENIKAPI 4* MARTINENZ HOTEL 3* MATIAT HOTEL 4* MAY HOTEL 3* MEGARON HOTEL Boutique MERCURE ISTANBUL BOMONTI 5* MERCURE ISTANBUL SIRKECI 4* METROPOLITAN HOTELS TAKSIM 4* MIKLAGORD HOTEL S-class MILANO HOTEL & SPA 4* MILLENNIUM ISTANBUL GOLDEN HORN 5* MOVENPICK HOTEL ISTANBUL GOLDEN HORN 5* MR CAS HOTELS 4* MUKARNAS PERA HOTEL 4* MUKARNAS TAKSIM HOTEL 4* MY ASSOS HOTEL 4* MY DREAM HOTEL 5* NAUMPASA KONAGI HOTEL 4* NAYLA PALACE HOTEL 2* NEW EMIN HOTEL 4* NIDYA HOTEL GALATAPORT 4* OLIMPIYAT HOTEL 3* ORAN HOTEL 4* ORIENT EXPRESS HOTEL & SPA BY ORKA HOTELS 4* ORIENTBANK HOTEL AUTOGRAPH COLLECTION 4* ORKA ROYAL HOTEL 4* ORKA TAKSIM SUITES & HOTEL 4* OTTOMANS LIFE DELUXE HOTEL 5* PALDE HOTEL 4* PERA ARYA HOTEL 3* PERA ROSE HOTEL 4* PERA TULIP HOTEL 4* PORT BOSPHORUS HOTEL 4* PREMIST HOTELS SULTANAHMET 4* PREMIST HOTELS TAKSIM 4* PRESTIGE HOTEL 3* RADISSON BLU HOTEL ISTANBUL PERA 5* RADISSON HOTEL PRESIDENT BEYAZIT ISTANBUL 4* RAMADA ISTANBUL TAKSIM 4* RECITAL HOTEL 3* REYDEL HOTEL 3* RIXOS PERA 5* ROOT KARAKOY HOTEL 4* ROYAN HAGIA SOPHIA RADISSON INDIVIDUALS 5* SAHINLER HOTEL 3* SANTA SOPHIA HOTEL 3* SARNIC HOTEL 4* SARNIC PREMIER HOTEL 4* SEMINAL HOTEL 4* SENATUS HOTEL 3* SENYOR GARDEN HOTEL 3* SERES OLD CITY HOTEL 3* SEVEN DAYS HOTEL 3* SEVEN HILLS PALACE HOTEL 4* SOGUT HOTEL & SPA 4* SOKULLU PASA HOTEL 4* STONE HOTEL ISTANBUL 3* SULTAN HAMIT HOTEL 3* SULTAN HOUSE HOTEL 4* SULTANIA HOTEL 5* SUMENGEN HOTEL 4* SUN COMFORT HOTEL 3* SUR HOTEL 3* SUREYYA HOTEL 3* SURMELI HOTEL 5* SWISSOTEL ISTANBUL THE BOSPHORUS 5* TAXIM EXPRESS HOTEL 4* TAXIM SUITES RESIDENCE 4* TAXIM TOWN HOTEL 4* TAYHAN HOTEL 3* THE BYZANTIUM HOTEL & SUITE ISTANBUL 4* THE CITY HOTEL 4* THE CONFORIUM HOTEL 4* THE GIFT HOTEL 4* THE GREEN PARK HOTEL TAKSIM 4*+ THE LAILA HOTEL 3* THE LOLA HOTEL 3* THE MARMARA SISLI 4* THE MARMARA TAKSIM 5* THE MILLION STONE HOTEL 4* THE PEAK HOTEL 5* THE REINA HOTEL 3* THEODIAN HOTEL 3* TILIA HOTEL 4* TREND HOTEL 4* TRIA HOTEL 4* TURVAN HOTEL 3* VENERA HOTEL 4* VICTORY HOTEL & SPA 4* VOGUE HOTEL SUPREME ISTANBUL 5* WALTON HARBIYE RESIDENCE 4* WALTON NISANTASI SPA 4* WEINGART HOTEL 4* YASMAK SULTAN HOTEL 4* YUSUF PASA KONAGI HOTEL 4* ZANADU ISTANBUL S-class ZEYNEP SULTAN HOTEL 3* ZURICH HOTEL 4*