Certificated
DOUBLETREE BY HILTON TRABZON
DOUBLTREE BY HILTON BODRUM IŞIL CLUB RESORT
ELEGANCE RESORT HOTEL SPA&WELLNESS AQUA (ELEGANCE RESORT HOTEL)
ELITE WORLD BUSINESS
ELITE WORLD ISTANBUL
ERBOY HOTEL
ERDEN SARAYEVO HOTEL
ERDİM HOTEL ( PARK 156 )
ERESIN HOTELS TAXIM & PREMIER
ERESIN HOTELS TOPKAPI
ERZURUMLU HOTEL
ESER PREMIUM HOTEL & SPA BÜYÜKÇEKMECE
EURO PARK HOTEL
FAROS HOTEL İSTANBUL
FERONYA HOTEL
FOUR SEASONS HOTEL ISTANBUL AT THE BOSPHORUS
FOUR SEASONS SULTANAHMET HOTEL
FUATPAŞA HOTEL
GERMİR PALAS HOTEL
GEZİ HOTEL BOSPHORUS
GLORIOUS HOTEL İSTANBUL
GOLD HOTEL
GOLDEN AGE HOTEL
GOLDEN CROWN HOTEL