A PLUS RESIDENCE 3* ABEL HOTEL 3* ACRA HOTEL 4* AGORA LIFE HOTEL 4* AKGUN ISTANBUL HOTEL 5* AKKA LUSH HOTEL 4* ALA SOFIA HOTEL 3* ALBATROS PREMIER HOTEL 4* ALDEM HOTEL 2* ALFA HOTEL 4* ALMINA HOTEL & SPA 4* ALPINN HOTEL 4* ALPINN HOTEL DUE 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* AREN SUITES 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* ASPEN HOTEL 3* ATIK PALACE HOTEL 3* ATLANTIS ROYAL HOTEL 3* AVANTGARDE COLLECTION LEVENT 5* AVANTGARDE COLLECTION SISLI 4* AVANTGARDE COLLECTION TAKSIM 4* AVICENNA HOTEL 4* AYBAR HOTEL 4* BALPETEK HOTEL 3* BARCELO ISTANBUL 5* 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* BENLER HOTEL LALELI 3* BERCE HOTEL 3* BERGAMA HOTEL 3* BEST WESTERN EMPIRE PALACE 4* BEYAZIT PALACE HOTEL 4* BIRBEY HOTEL 3* BIZ CEVAHIR HOTEL SULTANAHMET 4* BLACK BIRD HOTEL 4* BLACK TULIP HOTEL 4* BLUE ISTANBUL HOTEL 3* BLUE ISTANBUL HOTEL TAKSIM 3* BLUE MARMARAY HOTEL LALELI 3* BLUE WORLD HOTEL 4* BOUTIQUE SAINT SOPHIA ISTANBUL 5* BRAM HOTEL SULTANAHMET 3* BUDO HOTEL 3* BUHARA OLD CITY 3* CARINA GOLD HOTEL 4* CARLTON HOTEL 4* CARVAN HOTEL 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* CLARION HOTEL MAHMUTBEY 5* COMFORT LIFE HOTEL 4* CONCEPT HOTEL NISANTASI & SPA (EX.WALTON NISANTASI SPA) 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* DALAN HOTEL 3* DANIS HOTEL ISTANBUL 4* DARA HOTEL 3* DARKHILL HOTEL 4* DARKMEN HOTEL 3* DARU SULTAN HOTELS GALATA 5* DE MAREE HOTEL 3* DEDEMAN ISTANBUL 5* 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 & SPA 5* DOSSO DOSSI LALELI 4* DOSSO DOSSI OLD CITY - SULTANAHMET 4* DOSSO DOSSI YENIKAPI 4* DOUBLE TREE BY HILTON ISTANBUL SIRKECI 5* DOUBLETREE BY HILTON ISTANBUL TOPKAPI 5* EDIBE SULTAN HOTEL 3* EDITION OLD CITY HOTEL 4* ELITE WORLD COMFY (ex. ELITE WORLD PRESTIGE) 4* ELITE WORLD ISTANBUL 5* ENDICAN BEYAZIT 4* ENDICAN SULTANAHMET 4* ENDLESS SUITES HOTEL 3* ERBOY HOTEL 4* ERESIN HOTELS TOPKAPI 5* EURO PLAZA HOTEL 4* EUROSTARS HOTEL OLD CITY 4* EVSEN HOTEL (ADULT ONLY) 3* FAROS OLD CITY 4* FER HOTEL 5* FEZ INN HOTEL 3* FORS HOTEL 3* FORTUNA - OLD CITY 3* 3* FORTUNA - OLD CITY 4* 4* FORTUNA - OLD CITY 5* 5* FOUR-G HOTEL 3* FOUR POINTS BY SHERATON ISTANBUL 5* FUAT BEY PALACE 4* GALLEY HOTEL 3* GARDEN HOUSE HOTEL (ex ROSE GARDEN SUITES) Boutique GEDIK PASA KONAGI 3* GENOVA HOTEL 4* GERMIR PALAS 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 DURMAZ HOTEL 4* GRAND EMIR HOTEL 3* 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 ONS HOTEL 3* GRAND PAMIR HOTEL 4* GRAND SAGCANLAR HOTEL 3* GRAND SIRKECI HOTEL 4* GRAND WASHINGTON HOTEL 4* GRAND YAVUZ HOTEL 4* GRAZIELLA GOLD HOTEL S-class GREAT FORTUNE DESIGN 4* GULEC HOTEL 3* HALI HOTEL 3* HAMPTON BY HILTON ISTANBUL ZEYTINBURNU 4* HARMONY HOTEL 3* HERMANOS HOTEL 3* HHK DOWTOWN HOTEL 4* HILTON ISTANBUL BOMONTI HOTEL & CONFERENCE CENTER 5* HILTON ISTANBUL BOSPHORUS 5* HOTEL ARINNA 3*+ HOTEL BUYUK KEBAN 3* HOTEL GRAND ISTANBUL 3* HOTEL LA SERA 3* HOTEL MEKKE 3* HOTEL SABA ISTANBUL 3* HOTELLINO ISTANBUL 4* IKBAL DELUXE HOTEL 4* ILKAY HOTEL ISTANBUL 3* IMAGINE HOTEL 4* IPEK PALAS HOTEL 4* ISTANBUL HOLIDAY HOTEL 3* ISTANBUL ROYAL HOTEL 4* JAFF HOTELS NISANTASI 4* JW MARRIOTT ISTANBUL MARMARA SEA 5* KALYON HOTEL ISTANBUL 4* KARAMANS SIRKECI SUITES HOTEL Boutique KATE HOTEL SPECIAL CLASS 4* KAYA MADRID HOTEL 3* KAYA ROYAL HOTEL 4* KLAS HOTEL 4* KUNLUN KENSINGTON HOTEL 4* LADY DIANA HOTEL 4* LALAHAN HOTEL 4* LE PETIT PALACE HOTEL 4* LEGACY OTTOMAN HOTEL 5* LEMON RESIDENCE 3* LENUS HOTEL 3* LEVNI HOTEL & SPA 5* LIKA HOTEL 2* LIONEL HOTEL ISTANBUL 5* 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 3* MERCURE ISTANBUL BOMONTI 5* MERCURE ISTANBUL SIRKECI 4* METROPOLITAN HOTELS TAKSIM 4* MIDTOWN HOTEL 4* MIKLAGORD HOTEL 3* MILANO HOTEL & SPA 4* MISA HOTEL 3* MOVENPICK HOTEL ISTANBUL GOLDEN HORN 5* MUKARNAS PERA HOTEL 4* MUKARNAS TAKSIM HOTEL 4* MULA HOTEL 5* MY ASSOS HOTEL 4* MY DREAM HOTEL 5* NANDA HOTEL 4* NAUMPASA KONAGI HOTEL 4* NEW EMIN HOTEL 4* NIDYA HOTEL GALATAPORT 4* NOVA PLAZA CRYSTAL HOTEL 4* NOVA PLAZA ORION HOTEL 4* NOVA PLAZA PERA 4* NOWY EFENDI HOTEL Boutique OCCIDENTAL TAKSIM 4* OLIMPIYAT HOTEL 3* ORAN HOTEL 4* ORIENT EXPRESS HOTEL & SPA BY ORKA HOTELS 4* ORIENTBANK HOTEL AUTOGRAPH COLLECTION 4* ORKA ROYAL HOTEL 4* OTTOMANS LIFE DELUXE HOTEL 5* PALAZZO DONIZETTI HOTEL 4* PALDE HOTEL 4* PERA ARYA HOTEL 3* PERA ROSE HOTEL 4* PERA TULIP HOTEL 4* PORT BOSPHORUS HOTEL 4* PRESTIGE HOTEL 3* RADISSON BLU ISTANBUL PERA 5* RADISSON HOTEL PRESIDENT BEYAZIT ISTANBUL 4* RAIMOND HOTEL 3* RAMADA ISTANBUL TAKSIM 4* RAVI HOTEL 4* REGARD HOTEL 4* RETAJ ROYALE ISTANBUL 5* REYDEL HOTEL 3* RIA SUITES BOUTIQUE 4* RIXOS PERA 5* ROMANCE ISTANBUL HOTEL 5* ROOMERS HOTEL NISANTASI 3* ROOT KARAKOY HOTEL 4* ROYAL GALATA HOTEL 4* ROYAN HAGIA SOPHIA RADISSON INDIVIDUALS 5* SAHINLER HOTEL 3* SANTA SOPHIA HOTEL 3* SARNIC HOTEL 4* SARNIC PREMIER HOTEL 4* SELENAY HOTEL 3* SEMINAL HOTEL 4* SENATUS HOTEL 3* SENYOR GARDEN HOTEL 3* SERES OLD CITY HOTEL 3* SEVEN DAYS HOTEL 3* SEVEN HILLS PALACE HOTEL 4* SHINING STAR HOTEL 3* SIRKECI MANSION 4* SKALION HOTEL & SPA 4* SOFITEL ISTANBUL TAKSIM 5* SOGUT HOTEL & SPA 4* SOKULLU PASA HOTEL 4* SORRISO DUE HOTEL 4* SORRISO HOTEL 4* STANPOLI HOTEL 3* STONE HOTEL ISTANBUL 3* SULTAN HAMIT HOTEL 3* SULTAN MEHMED HOTEL 3* SULTANAHMET CESME HOTEL 3* SULTANIA HOTEL 5* SUMENGEN HOTEL 4* SUN COMFORT HOTEL 3* SUR HOTEL 3* SUREYYA HOTEL 3* 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 GALATA ISTANBUL HOTEL MGALLERY BY SOFITEL 5* THE GALATAPORT HOTEL 3* THE GIFT HOTEL 4* THE GREEN PARK HOTEL TAKSIM 4*+ THE LAILA HOTEL 3* THE LOLA HOTEL 3* THE MARMARA PERA 5* THE MARMARA SISLI 4* THE MARMARA TAKSIM 5* THE MERETTO HOTEL LALELI 3* THE MILLION STONE HOTEL 4* THE PERAPORT HOTEL 3* THE REINA HOTEL 3* THE RITZ-CARLTON ISTANBUL 5* THEODIAN HOTEL 3* TILIA HOTEL 4* TREND HOTEL 4* TRIA HOTEL 4* TURVAN HOTEL 3* URANUS ISTANBUL TOPKAPI HOTEL 5* VATAN ASUR HOTEL 4* VENERA HOTEL 4* VICTORY HOTEL & SPA 4* VOGUE HOTEL SUPREME ISTANBUL 5* WEINGART HOTEL 4* WVA HOTEL ISTANBUL (ex. VIVA) S-class WYNDHAM ISTANBUL OLD CITY 5* YASMAK SULTAN HOTEL 4* YILSAM SULTANAHMET HOTEL 4* YUKSEL ISTANBUL YENIKAPI 4* YUSUF PASA KONAGI HOTEL 4* ZAGREB HOTEL 4* ZANADU ISTANBUL 3* ZEM HOTEL 3* ZEYNEP SULTAN HOTEL 3* ZURICH HOTEL 4*