| Kuran Hotel International Istanbul | 3.0 star rating | 60 | Old City |
 | Lady Diana Hotel Istanbul | 4.0 star rating | 75 | Old City |
 | Lalahan Hotel Istanbul | Boutique | 18 | Old City |
 | Laleli Blue Marmaray Hotel Istanbul | Boutique | 27 | Old City |
 | Laleli Gonen Hotel Istanbul | 3.0 star rating | 65 | Old City |
 | Lalinn Hotel Istanbul | 3.0 star rating | 10 | Old City |
| Lancelot Hotel Istanbul | Boutique | 7 | Old City |
 | Lausos Hotel Istanbul | Boutique | 34 | Old City |
 | Legacy Ottoman Hotel Istanbul | 5.0 star rating | 172 | Old City |
 | Legend Hotel Istanbul | 3.0 star rating | 22 | Old City |
 | Lemon Residence Hotel Istanbul | Aparthotel 4* | 10 | Old City |
 | Le Petit Palace Hotel Istanbul | Pending Category | 28 | Old City |
| Le Safran Suite Hotel Istanbul | Boutique | 15 | Old City |
 | Levni Hotel & Spa Istanbul | 4.0 star rating | 75 | Old City |
 | Leyenda Hotel Istanbul | Boutique | 20 | Old City |
 | Liberty Hotel Istanbul | 3.0 star rating | 31 | Old City |
 | Loor Hotel Istanbul | 3.0 star rating | 12 | Old City |
| Magnaura House Hotel Istanbul | Boutique | 12 | Old City |
| Magnificent Hotel Istanbul | 3.0 star rating | 11 | Old City |
| Malabadi Beyazit Hotel Istanbul | 3.0 star rating | 24 | Old City |
 | Manesol Oldcity Bosphorus Hotel Istanbul | Boutique | 28 | Old City |
 | Mangana Konak Hotel Istanbul | Boutique | 17 | Old City |
 | Maral Hotel Istanbul | 3.0 star rating | 24 | Old City |
 | Marinem Hotel Istanbul | 3.0 star rating | 70 | Old City |
 | Mari Time Hotel Istanbul | Boutique | 14 | Old City |
 | Marmara Deluxe Hotel Istanbul | Boutique | 29 | Old City |
 | Marmara Place Old City Hotel Istanbul | 4.0 star rating | 41 | Old City |
 | Marmaray Hotel Istanbul | 4.0 star rating | 93 | Old City |
 | Martinenz Hotel Istanbul | 3.0 star rating | 90 | Old City |
 | Martinenz Residence Hotel Istanbul | Residence | 10 | Old City |
 | Mövenpick Hotel Istanbul Golden Horn | 5.0 star rating | 136 | Old City |
 | May Hotel Istanbul | 3.0 star rating | 21 | Old City |
 | Maywood Hotel Istanbul | Boutique | 57 | Old City |
 | Meddusa Hotel Istanbul | 2.0 star rating | 13 | Old City |
 | Megara Palace - Old City Hotel Istanbul | 3.0 star rating | 22 | Old City |
 | Melita Hotel Istanbul | 3.0 star rating | 32 | Old City |
 | Merial Hotel Istanbul | 3.0 star rating | 11 | Old City |
 | Metrolux Hotel Istanbul | 3.0 star rating | 23 | Old City |
 | Mevlana Boutique Hotel Istanbul | 3.0 star rating | 20 | Old City |
| Milano Hotel & Spa Istanbul | Boutique | 32 | Old City |
 | Mina Hotel Istanbul | Historical Hotel Luxurious | 48 | Old City |
 | Miran Hotel Istanbul | Boutique | 16 | Old City |
 | Mirilayon Hotel Istanbul | 4.0 star rating | 79 | Old City |
 | Misa Hotel Istanbul | Boutique | 30 | Old City |
| Modern Sultan Hotel Istanbul | Boutique | 10 | Old City |
 | Momento Hotel Istanbul | Boutique | 45 | Old City |
 | Monaco Hotel Istanbul | 4.0 star rating | 65 | Old City |
| Mono Suites Hotel Istanbul | 3.0 star rating | 12 | Old City |
 | Mosaic Hotel Istanbul | 4.0 star rating | 115 | Old City |
 | Muyan Suites Hotel Istanbul | Boutique | 12 | Old City |