A PLUS RESIDENCE APARTHOTEL ABISSO HOTEL 3* AC HOTELS MARRIOTT 4* ACRA HOTEL 4* ADORA HOTEL 2* AGAN HOTEL 3* AKGUN ISTANBUL HOTEL 5* ALBATROS HAGIA SOPHIA HOTEL 3* ALMINA HOTEL 4* ALPINN HOTEL ISTANBUL 4* ALTUN LIFE HOTEL 2* ALZER HOTEL 4* AMBER HOTEL ISTANBUL 3*+ AMETHYST HOTEL LALELI / BEYAZIT 4* ANTIK HOTEL 4* ANTIK IPEK HOTEL ( SPECIAL CLASS ) 2* ANTIS HOTEL SULTANAHMET 4* ANTUSA DESIGN HOTEL 4* ANTUSA PALACE HOTEL 4* APRILIS GOLD HOTEL 4* ARCADE HOTEL LUXURY NISANTASI 5* ARENA HOTEL 4* ARMAGRANDI SPINA HOTEL SULTANAHMET 4* ART EFES HOTEL 3*+ ARTI BOUTIQUE HOTEL 3* ATLANTIS ROYAL HOTEL ISTANBUL 3* AVICENNA HOTEL 4* AYA SULTANAHMET HOTEL BOUTIQUE AYASULTAN HOTEL 3* AZADE HOTEL 4* BARCELO ISTANBUL 5* BARIN HOTEL 3* BEETHOVEN ISTANBUL BOUTIQUE BEETHOVEN PREMIUM BOUTIQUE BEETHOVEN SENFONI BOUTIQUE BEETHOVEN SUIT SPECIAL LUXURY BENLER HOTEL 3* BEST NOBEL HOTEL 3* BEST WESTERN EMPIRE PALACE 4* BEYAZIT PALACE HOTEL 4* BIZIM HOTEL 3* BLACK BIRD HOTEL 4* BLUE HOUSE HOTEL 3* BLUE ISTANBUL HOTEL SULTANAHMET 3* BLUE ISTANBUL HOTEL TAKSIM BOUTIQUE BLUE MARMARAY LALELI 3* BUYUK HAMIT HOTEL 4* BYOTELL 5* CARTOON HOTEL 4* CASTILLO ROJO HOTEL ISTANBUL BOUTIQUE CELAL SULTAN HOTEL 4* CIHANGIR PALACE HOTEL 3* CIRAGAN PALACE KEMPINSKI 5* CITY CENTER HOTEL TAKSIM 4* CLARION HOTEL GOLDEN HORN 4*+ CLASSIC ISTANBUL 3* 3* CONRAD ISTANBUL BOSPHORUS 5* CONSTANTINOPOLIS HOTEL 3* CROWNE PLAZA ISTANBUL HARBIYE 5* CROWNE PLAZA LALELI OLD CITY 5* CVK PARK BOSPHORUS 5* CVK TAKSIM HOTEL 4* DANIS HOTEL ISTANBUL 4* DARKHILL HOTEL 4* DARKMEN HOTEL 3* DE MAREE HOTEL 3* DEDEM BOUTIQUE HOTEL 3* DEDEMAN ISTANBUL 5* DELTA HOTEL 3* DELTA HOTELS BY MARRIOT ISTANBUL HALIC 5* DELUXE GOLDEN HORN HOTEL 4* DELUXE NEWPORT HOTEL 3* DEMPA HOTEL 3* DENCITY HOTEL 4* DIANA HOTEL 2* DIVAN ISTANBUL ASIA 5* DIVAN ISTANBUL CITY 4* 4* DIVAN ISTANBUL OTEL 5* DIVAS HOTEL SULTANAHMET 3* DOS HERMANOS ISTANBUL 2* DOSSO DOSSI HOTELS DOWNTOWN 5* DOSSO DOSSI HOTELS OLD CITY 4* DOUBLE TREE BY HILTON ISTANBUL MODA 5* DOUBLE TREE BY HILTON ISTANBUL TOPKAPI 5* DoubleTree by Hilton Istanbul Old Town 5* DoubleTree by Hilton Istanbul Sirkeci 4* DUNDAR HOTEL SPA 3* EDIBE SULTAN HOTEL 3* ELAN HOTEL TAKSIM 3*+ ELANAZ HOTEL 3* ELIT PALACE HOTEL 3* ELITE WORLD ISTANBUL HOTEL 5* ENDERUN HOTEL BEYAZIT 4* ENDICAN BEYAZIT HOTEL 3* ERESIN HOTELS SULTANAHMET BOUTIQUE 5* ERESIN HOTELS TAXIM PREMIER 4* ERESIN HOTELS TOPKAPI 5* EURO DESIGN HOTEL 3* FARINA HOTEL BY CIGNO 4* FAROS HOTEL OLD CITY SULTANAHMET 4* FAROS HOTEL TAKSIM & OLD CITY 4* FER HOTEL 4*+ FERONYA HOTEL 4* FIDE HOTEL 3* FORS HOTEL ( SPECIAL CLASS ) 3* FORTUNA HOTEL 3* FORTUNA HOTEL SULTANAHMET 3* 3* GALAPERA HOTEL BOUTIQUE GEDIKPASA KONAGI 3* GEVHER HOTEL 3* GEZI HOTEL BOSPHORUS 4*+ GLAMOUR HOTEL ISTANBUL SIRKECI 4* GOLDEN AGE HOTEL 4* GOLDEN CITY HOTEL ISTANBUL 4* GOLDEN CROWN HOTEL 3* GOLDEN HILL HOTEL 4* GOLDEN HORN ISTANBUL 4* GOLDEN HORN SIRKECI 4* GOLDEN SAND HOTEL 3* GORUR HOTEL 3* GRAND AMBIANCE 3* GRAND ANATOLIA HOTEL 3* GRAND ANT HOTEL 3* GRAND ARAS HOTEL & SUITES 4* GRAND BEYAZIT HOTEL 4* GRAND BOSFOR HOTEL 3* GRAND BURSA HOTEL 3* GRAND CEVAHIR HOTEL & CONVENTION CENTER 5* GRAND DURMAZ HOTEL 4* GRAND EMIN HOTEL LALELI / YENIKAPI 4* GRAND HALIC HOTEL 4* GRAND HILARIUM HOTEL 4* GRAND HOTEL DE LONDRES BEYOGLU 4* GRAND HOTEL DE PERA 4* GRAND HYATT ISTANBUL 5* GRAND LIZA HOTEL. 3* GRAND MAKEL HOTEL TOPKAPI 5* GRAND MARCELLO HOTEL 4* GRAND MILAN HOTEL 3* GRAND ONS HOTEL 3* GRAND OZTANIK 4* GRAND PAMIR HOTEL 3* GRAND STAR BOSPHORUS HOTEL 4* GRAND WASHINGTON HOTEL 4* GRAZIELLA GOLD HOTEL 3* GREAT FORTUNE DESIGN HOTEL 4* GREAT FORTUNE HOTEL AND SPA 4*+ GUNES HOTEL MERTER 4* HAGIA SOFIA MANSIONS ( CURIO COLLECTION BY HILTON ) 5* HAMIT HOTEL ISTANBUL 2* HERTON HOTEL 3* HHK DOWNTOWN HOTEL 4* HILTON GARDEN INN ISTANBUL GOLDEN HORN 4* HILTON ISTANBUL BOMONTI HOTEL 5* HILTON ISTANBUL BOSPHORUS 5* HIPPODROME HOTEL SULTANAHMET 3* HISTORIAL HOTEL BOUTIQUE HOLIDAY INN ISTANBUL SISLI 5* HOTEL MIKLAGORD 3* HOTEL ALBATROS PREMIER 4* HOTEL BAZAAR 3* HOTEL BLACK TULIP 4* HOTEL BULVAR PALAS 4* HOTEL BUYUK PARIS 3* HOTEL CENTRUM ISTANBUL 3* HOTEL CIGNO ISTANBUL 3* HOTEL DENIZ HOUSES 3* HOTEL ERDEN SARAYEVO 3* HOTEL EVSEN 3* HOTEL FEHMI BEY 3* HOTEL GOLDEN WAY 4* HOTEL GRAND ASIYAN 4* HOTEL GRAND MARK 3* HOTEL HALI 3* HOTEL IPEK PALAS 4* HOTEL ISTANBUL TREND 4* HOTEL MILANO ISTANBUL 3* HOTEL NAUMPASA KONAGI 3* HOTEL OLIMPIYAT 3* HOTEL PALDE & SPA 4* HOTEL PIYA SPORT 4* HOTEL SAHINLER 3* HOTEL SOKULLU PASA 4* HOTEL SULTAN'S INN HOTEL 3* HOTEL SULTANI 3* HOTEL SULTANIA 4*+ HOTEL THE PERA HILL 3* HOTEL TOPKAPI 3* HOTELLINO SIRKECI Other IBIS ESENYURT 3* IBIS ISTANBUL WEST 3* IBIS TUZLA HOTEL 3* IBIS ZEYTINBURNU 3* ILKAY HOTEL 3* INNOVA SULTANAHMET HOTEL 4* ISTANBUL - CAPPADOCIA 3* 4* ISTANBUL BLUE HOTEL 4* ISTANBUL GONEN HOTEL 5* ISTANBUL HOLIDAY HOTEL 3* ISTANBUL MATIAT HOTEL 4* JW MARRIOTT ISTANBUL BOSPHORUS 4* KAYA ISTANBUL FAIR CONVENTION 5* KAYA MADRID HOTEL 3* KECIK HOTEL 3* KLAS HOTEL 4* KUNLUN HOTEL Other KUPELI PALACE HOTEL 3* KYBELE HOTEL 3* LADY DIANA 4* LALAHAN HOTEL 4* LASA GRADA HOTEL 5* LAVANDULA HOTEL BOUTIQUE LE MERIDIEN ISTANBUL ETILER 5* LEGACY OTTOMAN HOTEL 5* LEMON RESIDENCE HOTEL 3* LEVNI HOTEL SPA 4*+ LIKA HOTEL BOUTIQUE MAGNIFICENT HOTEL KUMKAPI / SULTANAHMET 3* MANESOL BOUTIQUE GALATA 4* MARCELLO HOTEL 3* MARMARA PLACE 4* MARMARAY HOTEL 4* MAROON HOTEL PERA 4* MAROON HOTEL TOMTOM 4* MAY HOTEL 3* MEGARON HOTEL BOUTIQUE MERCURE ISTANBUL SIRKECI 4* MERCURE ISTANBUL WEST HOTEL & CONVENTION CENTER 5* MILLER HOTEL 3* MIRA OTEL ISTANBUL 3* MISS ISTANBUL HOTEL & SPA 4* MORIONE HOTELS KARAKOY SPA 4* MR CAS HOTEL 4* MYDREAM ISTANBUL HOTEL BOUTIQUE NANDA HOTEL 3* NAYLA PALACE HOTEL 3* NOVA PLAZA BOUTIQUE & SPA BOUTIQUE NOVA PLAZA PERA HOTEL & HAMAM 4* NOVA PLAZA TAKSIM SQUARE 4* NOVOTEL ISTANBUL BOSPHORUS 5* NOVOTEL ISTANBUL ZEYTINBURNU 4* NOWY EFENDI HOTEL 4* OBELISK HOTEL & SUITES 3* Boutique OLD CITY SULTANAHMET 3* ORKA ROYAL HOTEL 4* OTAG HOTEL BOUTIQUE OTTOMAN'S LIFE HOTEL BOUTIQUE 4* OTTOMAN HOTEL IMPERIAL 4* OTTOMAN HOTEL PARK SULTANAHMET 4* OTTOMAN LUXURY 3* OTTOMAN TIME HOTEL 2* PARK HYATT ISTANBUL MACKA PALAS 5* PELICAN HOUSE 3* PERA ARYA HOTEL 3* PERA PALACE HOTEL 5* POINT HOTEL BARBAROS 5* POLAT DEMIR HOTEL 3* PRESTIGE HOTEL 3*+ PROMISE HOTEL TAKSIM 3* PULLMAN ISTANBUL HOTEL 5* QONAQ HOTEL&SUITES BOUTIQUE QUA HOTELS 5* RADISSON BLU HOTEL ISTANBUL PERA 5* RADISSON BLU HOTEL ISTANBUL SISLI 5* RAMADA BY WYNDHAM ISTANBUL GOLDEN HORN BEYOGLU 4* RAMADA ENCOR BY WYNDHAM BAYRAMPASA 4* RAMADA ENCORE BY WYNDHAM ISTANBUL KARTAL 4* RAMADA HOTEL & SUITES BY WYNDHAM ISTANBUL MERTER 5* RAMADA PLAZA BY WYNDHAM ISTANBUL CITY CENTER 5* RANDOM SUIT HOTEL BOUTIQUE REALSTAR HOTEL 4* RECITAL HOTEL 3* REGIE OTTOMAN ISTANBUL 4* RENAISSANCE ISTANBUL POLAT BOSPHORUS HOTEL 5* RETAJ ROYAL HOTEL 5* RETRO PERA HOTEL 3* REYDEL HOTEL 2* RIXOS PERA ISTANBUL 5* ROMANCE ISTANBUL HOTEL 4*+ ROSE GARDEN HOUSE BOUTIQUE SANTA SOPHIA HOTEL 3* SARI KONAK HOTEL 4* SARISSA HOTEL 4* SARNIC HOTEL BOUTIQUE SARNIC PREMIER 3* SELENAY HOTEL 3* SEVEN DAYS HOTEL 3* SHANGRI-LA BOSPHORUS 5* SHERATON ISTANBUL CITY CENTER 5* SIRKECI MANSION HOTEL 4* SKALION HOTEL & SPA 4* SOFITEL ISTANBUL TAXIM 5* SOGUT HOTEL OLD CITY ISTANBUL 3* SORRISO DUE HOTEL 4* SORRISO HOTEL 4* SPECTRA HOTEL 3* SPINEL HOTEL 3* STAR HOLIDAY HOTEL 3* STONE HOTEL 3* SULTAN HOUSE HOTEL BOUTIQUE SULTANAHMET CESME HOTEL 3* SULTANAHMET LAUSOS HOTEL 4* SULTANAHMET PARK HOTEL 3* SULTANAHMET PREMIST HOTEL BOUTIQUE SULTANHAN HOTEL Other SUMENGEN HOTEL 4* SUN COMFORT HOTEL 3* SUR HOTEL SULTANAHMET BOUTIQUE SURA HAGIA SOPHIA HOTEL 5* SUREYYA HOTEL 3* TAKSIM PREMIST HOTEL BOUTIQUE TAKSIM SQUARE HOTEL 4* TAXIM EXPRESS HOTEL 4* TAYHAN HOTEL 3* TEMPO FAIR SUITES Other TEMPO SUITES AIRPORT BOUTIQUE THE ARTISAN ISTANBUL MGALLERY 4* THE BYZANTIUM HOTEL 4* THE CENTER HOTEL 3* THE CENTRAL PALACE BOSPHORUS 5* THE CITY HOTEL 4* THE ELYSIUM ISTANBUL 5* THE FOX TAKSIM 3* THE GALATAPORT HOTEL BOUTIQUE THE GOLDEN PERA'S HOTEL 2* THE GREEN HOTEL 4* THE GREEN PARK HOTEL TAKSIM 4* THE LAILA HOTEL 3* THE LOLA HOTEL 3* THE MARMARA PERA 4* THE MARMARA SISLI 4* THE MARMARA TAKSIM 5* THE MERETTO ISTANBUL OLD CITY 4* THE PEAK HOTEL TAKSIM 4* THE PERAPORT HOTEL BOUTIQUE THE QUEEN HOTEL 3* Boutique THE TIME ISTANBUL HOTEL BOUTIQUE THE TRIP HOTEL KUMKAPI 3* THE XANADU HOTEL 3* TILIA HOTEL 4* TITANIC CITY TAKSIM 4* TIYATRO HOTEL OLD CITY 3* VERNA HOTEL 3* VICTORY HOTEL & SPA 4*+ VITAL HOTEL FULYA 4* VIVA HOTEL KUMKAPI 3* VIZYON CITY HOTEL 3* VOGUE HOTEL SUPREME ISTANBUL 4*+ WAW HOTEL GALATAPORT 3* WHITE MONARCH HOTEL 4* WORLD HERITAGE CENTER HOTEL 3* WORLD HERITAGE HOTEL ISTANBUL 3* WOW AIRPORT HOTEL 4* WYNDHAM GRAND ISTANBUL LEVENT 5* YASMAK COMFORT 3* YASMAK SULTAN HOTEL 4* YAZTUR HOTEL 3* YILSAM HOTEL SULTANAHMET 4* YUKSEL ISTANBUL HOTEL YENIKAPI 4* YUSUFPASA KONAGI HOTEL 3* ZURICH HOTEL LALELI 4*