- 10 Karakoy Istanbul
- Aprilis Hotel - Special class
- Arcade Hotel
- Armada Istanbul Old City Hotel
- Arts Hotel Istanbul - Special Class
- Avantgarde Levent Hotel - Boutique Class
- Aybar Hotel & Spa
- Bricks Hotel Istanbul
- Byotell Hotel Istanbul
- CVK Park Bosphorus Hotel Istanbul
- CVK Taksim Hotel Istanbul
- Centro WestSide
- Cevahir Hotel Istanbul Asia
- Ciragan Palace Kempinski
- Conrad Istanbul Bosphorus
- Crowne Plaza Istanbul - Florya
- Crowne Plaza Istanbul - Old City
- Crowne Plaza Istanbul - Oryapark
- Daru Sultan Hotels Galata
- Dedeman Bostanci Istanbul Hotel & Convention Center
- Dedeman Istanbul
- Delta Hotel Istanbul
- Deluxe Golden Horn Sultanahmet Hotel
- Dila Hotel
- Diyar Hotel
- Dosso Dossi Hotels & Spa Downtown
- DoubleTree by Hilton Istanbul - Moda
- DoubleTree by Hilton Istanbul - Piyalepasa
- DoubleTree by Hilton Istanbul - Sirkeci
- DoubleTree by Hilton Istanbul Topkapi
- DoubleTree by Hilton Istanbul Umraniye
- Ekinci Residence
- Elite World Europe Hotel
- Elite World Grand Istanbul Kucukyali
- Elite World Istanbul Florya
- Elite World Istanbul Taksim
- Emirtimes Hotel Tuzla
- Eresin Hotels Topkapi
- Fairmont Quasar Istanbul
- Four Seasons Hotel Istanbul at the Bosphorus
- Fraser Place Antasya Istanbul
- Fraser Place Anthill Istanbul
- GLK PREMIER Regency Suites & Spa
- Galata Antique Hotel
- Gezi Hotel Bosphorus, Istanbul, a Member of Design Hotels
- Golden Royal Hotel & Spa
- Golden Tulip Istanbul Bayrampasa
- Gorrion Hotel Istanbul
- Grand Cevahir Hotel & Convention Center
- Grand Durmaz Hotel
- Grand Hotel De Pera
- Grand Hyatt Istanbul
- Halifaks Hotel
- Hilton Garden Inn Istanbul Ataturk Airport
- Hilton Istanbul Bakirkoy
- Hilton Istanbul Bomonti Hotel & Conference Center
- Hilton Istanbul Bosphorus
- Hilton Istanbul Kozyatagi
- Hilton Istanbul Maslak
- Holiday Inn Istanbul - Kadikoy
- Holiday Inn Istanbul City
- Hotel Bulvar Palas
- Hotel Yasmak Sultan
- Hotel Zurich Istanbul
- Innpera Hotel
- Inntel Hotel Istanbul
- Intercontinental Istanbul, An IHG Hotel
- Isg Sabiha Gökçen Airport Hotel
- Istanbul Golden City Hotel
- Istanbul Marriott Hotel Pendik
- Istanbul Marriott Hotel Sisli
- Kadikoy Park Suites
- Kartal Palace Taksim Square
- Klas Hotel
- Lady Diana Hotel
- Lazzoni Hotel
- Le Méridien Istanbul Etiler
- Legacy Ottoman Hotel
- Limak Eurasia Luxury Hotel
- Lionel Hotel Istanbul
- Manesol Boutique Galata
- Manesol Old City Bosphorus
- Marnas Hotels
- Mercure Istanbul Altunizade
- Metropolitan Hotels Bosphorus
- Millennium Istanbul Golden Horn
- Molton Monapart Mecidiyekoy
- Momento Golden Horn Hotel
- Mövenpick Hotel Istanbul Bosphorus
- Mövenpick Istanbul Golden Horn
- Nidya Hotel Galataport
- Niles Hotel Istanbul - Special Class
- Noble22 Suites-Special Category
- Nordstern Hotel Galata
- Novotel Istanbul Karakoy
- Novotel Istanbul Zeytinburnu
- Ottoman's Life Hotel Deluxe
- P Galata Boutique Hotel
- Palazzo Donizetti Hotel - Special Class
- Pierre Loti Hotel Old City- Special Category
- Point Hotel Barbaros
- Point Hotel Taksim
- Port Bosphorus Hotel
- Radisson Blu Bosphorus Hotel, Istanbul
- Radisson Blu Hotel & Spa, Istanbul Tuzla
- Radisson Blu Hotel Istanbul Ottomare
- Radisson Blu Hotel, Istanbul Asia, Turkey
- Radisson Blu Hotel, Istanbul Pera
- 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 Grand Bazaar
- Ramada by Wyndham Istanbul Old City
- Ravvda Hotel
- Raymond Hotel
- Renaissance Istanbul Polat Bosphorus Hotel
- Rixos Pera Istanbul
- Royal Stay Palace Hotel
- Régie Ottoman Istanbul
- Shangri-La Bosphorus, Istanbul
- Sheraton Grand Istanbul Atasehir
- Sheraton Istanbul Ataköy Hotel
- Suadiye Hotel
- Sura Design Hotel and Suites - Boutique Class
- Sura Hagia Sophia Hotel
- Surmeli Istanbul Hotel
- Swissotel The Bosphorus Istanbul
- TRYP by Wyndham Istanbul Basin Ekspres
- Taksim Metropark Hotel
- Taksim Square Hotel
- Tango Arjaan by Rotana Istanbul Asia
- Taxim Hill Hotel
- The Artisan Istanbul MGallery
- The Bank Hotel Istanbul, a Member of Design Hotels
- The G Hotels Istanbul
- The Galata Istanbul Hotel - MGallery
- The Grand Tarabya
- The Green Park Merter
- The Haze Karaköy
- The Hotel Beyaz Saray
- The Marmara Pera
- The Marmara Sisli
- The Marmara Taksim
- The Parma Hotel Taksim
- The Peak Hotel & Spa
- The Stay Boulevard Nisantasi
- The Stay Nisantasi
- The Story Hotel Pera
- Titanic City Taksim
- Titanic Port Bakirkoy
- Tomtom Suites
- Tryp By Wyndham Istanbul Sancaktepe
- Tunel Residence
- Uranus Istanbul Topkapi
- Windsor Hotel & Convention Center
- Wish More Hotel Istanbul
- Wyndham Grand Istanbul Europe
- Wyndham Grand Istanbul Kalamis Marina Hotel
- Wyndham Grand Istanbul Levent
- ibis Istanbul Zeytinburnu
