- Ada Karakoy Hotel - Special Class
- Akin Suites
- Alfa Hotel
- All Seasons Hotel Istanbul
- Alrazi Hotel
- Art City Hotel Istanbul
- Aruna Hotel
- Asitane Life Hotel
- Asmali Hotel
- Avantgarde Levent Hotel - Boutique Class
- Avcilar Inci Hotel
- Baron Hotel
- Bekdas Hotel Deluxe & Spa
- Blue Tuana Hotel
- Bof Hotels Ceo Suites Atasehir
- Byotell Hotel Istanbul
- CVK Park Bosphorus Hotel Istanbul
- Cevahir Hotel Istanbul Asia
- Ciragan Palace Kempinski
- Clarion Hotel Golden Horn
- Clarion Hotel Istanbul Mahmutbey
- Crowne Plaza Istanbul - Old City
- Daru Sultan Hotels Galata
- Dedeman Bostanci Istanbul Hotel & Convention Center
- Delta Hotels by Marriott Istanbul West
- Divalis Hotel
- Divani Ali Hotel
- Divas Hotel
- Dosso Dossi Hotels & Spa Downtown
- DoubleTree by Hilton Istanbul - Avcilar
- DoubleTree by Hilton Istanbul - Moda
- DoubleTree by Hilton Istanbul - Old Town
- DoubleTree by Hilton Istanbul Topkapi
- Elite World Europe Hotel
- Elite World Grand Istanbul Kucukyali
- Elite World Istanbul Florya
- Emine Sultan Hotel
- Enderun Hotel Istanbul
- Eresin Hotels Sultanahmet - Boutique Class
- Eresin Hotels Topkapi
- Erten Konak
- Fraser Place Antasya Istanbul
- Galley Hotel
- Golden Tulip Istanbul Bayrampasa
- Gorrion Hotel Istanbul
- Grand Cevahir Hotel Convention Center
- HHK Hotel
- Hampton by Hilton Istanbul Kurtkoy
- Hilton Istanbul Bomonti Hotel & Conference Center
- Hilton Istanbul Kozyatagi
- Holiday Inn Istanbul - Kadikoy
- Holiday Inn Istanbul City
- Hotel Broken Column
- Hotel Gedik Pasa Konagi
- Hotel Santa Hill
- Isg Sabiha Gökçen Airport Hotel
- Istanbul Dedem Hotel 1
- Istanbul Golden City Hotel
- Istanbul Gonen Hotel
- Istanbul Marriott Hotel Asia
- Istanbul Marriott Hotel Pendik
- Istanbul Marriott Hotel Sisli
- Istanbul Sydney Hotel
- Kent Hotel Istanbul
- Kupeli Palace Hotel
- Laleli Gonen Hotel
- Lalinn Hotel
- Lasagrada Hotel Istanbul
- Lazzoni Hotel
- Legacy Ottoman Hotel
- Lionel Hotel Istanbul
- Mangana Konak
- Mercure Istanbul Altunizade
- Mercure Istanbul Bomonti
- Mercure Istanbul Umraniye
- Mercure Istanbul Yesilkoy
- Mevlana Hotel
- Mövenpick Hotel Istanbul Bosphorus
- Mövenpick Istanbul Golden Horn
- Novotel Istanbul Karakoy
- Novotel Istanbul Zeytinburnu
- Ottoman's Life Hotel Deluxe
- Perazre Hotel
- Pullman Istanbul Hotel & Convention Center
- Radisson Blu Hotel Istanbul Ottomare
- Radisson Blu Hotel, Istanbul Asia, Turkey
- Radisson Blu Hotel, Istanbul Sisli
- Ramada Hotel & Suites by Wyndham Istanbul Merter
- Ramada Plaza by Wyndham Istanbul City Center
- Ramada Plaza by Wyndham Istanbul Tekstilkent
- Ramada by Wyndham Istanbul Old City
- Rox Hotel
- Royal Stay Palace Hotel
- Rozza Hotel
- Sheraton Grand Istanbul Atasehir
- Sultans Hotel
- Sultans Royal Hotel
- Sura Hagia Sophia Hotel
- Swissotel The Bosphorus Istanbul
- TRYP by Wyndham Istanbul Basin Ekspres
- Taksim Pera Orient Hotel
- Tango Arjaan by Rotana Istanbul Asia
- The Artisan Istanbul MGallery
- The G Hotels Istanbul
- The Galata Istanbul Hotel - MGallery
- The Green Park Bostanci
- The Marmara Taksim
- The Meretto Hotel Istanbul Old City
- The Pera Hotel
- The Story Hotel Pera
- Titanic Business Kartal
- Titanic Port Bakirkoy
- Tunel Residence
- Uranus Istanbul Topkapi
- Victory Hotel & Spa Istanbul
- Viva Deluxe Hotel
- Vogue Hotel Supreme Istanbul
- West Pera Hotel
- Windsor Hotel & Convention Center
- Wish More Hotel Istanbul
- Wow Istanbul Hotel
- ibis Istanbul West