Certificated
ADELA HOTEL
ALL SEASONS HOTEL
AMETHYST HOTEL
ARMADA HOTEL
ASSOS EDEN GARDENS HOTEL
AVANTGARDE TAKSİM HOTEL
BARON HOTEL
BERR HOTEL
BEST WESTERN THE PRESIDENT
BİLEK HOTEL
BLACK BIRD HOTEL
BULVAR PALAS HOTEL
BURGU & TANGO ARJAAN BY ROTANA (VİPDAP)
BÜYÜK ŞAHİNLER HOTEL
CARLTON HOTEL
CENTRO WESTSIDE İSTANBUL BY ROTANA HOTEL
CLARION HOTEL GOLDEN HORN
COURTYARD BY MARRIOTT
CUCI HOTEL DI MARE BAYRAMOĞLU (CUCİ HOTEL)
CVK HOTELS
DARKHILL HOTEL
DEDEPARK HOTEL
DİLA HOTEL
DİVAN CITY İSTANBUL
