Certificated
MOVENPICK HOTEL ISTANBUL GOLDEN HORN
MOVENPICK HOTEL MALATYA
NAZ CITY HOTEL
NEVALİ HOTEL
NG SAPANCA WELLNESS & CONVENTION
NİDYA HOTEL GALATAPORT
NIPPON HOTEL
NOVOTEL
OMMER HOTEL
OPERA HOTEL
ORAN HOTEL
ORKA ROYAL HOTEL
OTTOMAN HOTEL IMPERIAL
OTTOMAN PARK HOTEL
PALAZZO DONIZETTI HOTEL
PARK DEDEMAN ESKİŞEHİR
PARK HYATT İSTANBUL MAÇKA PALAS
PERA PALACE HOTEL
PETEK PANSİYON
PIERRE LOTI
PİSA HOTEL
POINT HOTEL
POINT HOTEL BARBAROS
POLAT ERZURUM RESORT HOTEL