Certificated
SÜRMELI ISTANBUL
SUSONA BODRUM LXR HOTELS & RESORTS
SWISSOTEL ANKARA
SWISSOTEL BUYUK EFES
SWISSOTEL THE BOSPHORUS
TAKSIM INTERNATIONAL ABANT PALACE
THE MARMARA TAKSIM
THE MUSEUM HOTEL ANTAKYA
THE RITZ-CARLTON ISTANBUL
THE ST. REGIS ISTANBUL
TITANIC BUSINESS GOLDEN HORN HOTEL
TITANIC BUSINESS KARTAL
TITANIC PORT BAKIRKOY
TRYP BY WYNDHAM İSTANBUL BASIN EKSPRES
TÜYAP PALAS HOTEL
Wish More Hotel İstanbul
WOW İstanbul Hotel
Wyndham Grand İstanbul Europe
WYNDHAM GRAND ISTANBUL KALAMIŞ MARINA
WYNDHAM GRAND ISTANBUL LEVENT
Zorlu Grand Hotel
