Certificated
HILTON GARDEN INN KOCAELİ ŞEKERPINAR
HOLIDAY INN İSTANBUL KADIKÖY
HOLIDAY INN İSTANBUL OLD CITY
HOTEL GRAND WASHINGTON
HOTEL KONAK
HOTEL SUADİYE
IBIS STYLES İSTANBUL BOMONTİ
İBİS STYLES TAKSİM
İĞNEADA RESORT HOTEL
INNPERA HOTEL
İSFANBUL HOLIDAY HOME
İSTANBUL ANTİK HOTEL
İSTANBUL MY ASSOS HOTEL
İSTANBUL ROYAL HOTEL
KALYON OTEL
KENT HOTEL
LA QUINTA BY WYNDHAM GİRESUN
LAMARTINE HOTEL
MARBLE HOTEL
MERCIA HOTELS&RESORTS
MERCURE İSTANBUL BAKIRKÖY
MIDTOWN HOTEL
MILLENNIUM İSTANBUL GOLDEN HORN
MOSAIC HOTEL
