Certificated
BEST WESTERN CITADEL SPECIAL
BEST WESTERN EMPIRE PALACE HOTEL
BEST WESTERN THE PRESIDENT
BH CONFERENCE & AIRPORT HOTEL İSTANBUL
BİLEK HOTEL
BLACK BIRD HOTEL
BLUE HOUSE
BULVAR PALAS HOTEL
BUTİK STAR HOTEL
BÜYÜK KEBAN HOTEL
BÜYÜK ŞAHİNLER HOTEL
BYOTELL
CARLTON HOTEL
CARTOON HOTEL
CARUS CAPPADOCIA
CELAL SULTAN
ÇINAR HOTEL
ÇIRAĞAN PALACE KEMPINSKI
CLARION HOTEL GOLDEN HORN
CONRAD İSTANBUL BOSPHORUS
COURTYARD BY MARRIOTT
CROWNE PLAZA İSTANBUL ASIA
CROWNE PLAZA İSTANBUL OLD CITY
CROWNE PLAZA İSTANBUL ORYAPARK