 | Medes Park Hotel Costa Brava & Costa Barcelona-Maresme | Vacationals Turistics Houses | 8 | L'Estartit |
 | Mediterranea - Five Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Platja d'Aro |
 | Mediterranean Sand Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 108 | Lloret de Mar |
 | Mediterraneo Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 44 | Roses |
 | Mediterraneo Park Hotel Costa Brava & Costa Barcelona-Maresme | 4.0 star rating | 205 | Roses |
 | Mediterrani Express Hotel Costa Brava & Costa Barcelona-Maresme | 2.0 star rating | 32 | Calella |
| Melis-Ii - One Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Playa de Pals |
 | Melis-Ii - One Bedroom No.2 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Playa de Pals |
 | Melis-Ii - Three Bedroom No.3 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Playa de Pals |
 | Melis-Ii - Two Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Playa de Pals |
| Mercé Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 140 | Pineda de Mar |
 | Mercedes Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 92 | Lloret de Mar |
 | Mercury Hotel Costa Brava & Costa Barcelona-Maresme | 4.0 star rating | 323 | Santa Susana |
| Mestral Hotel Costa Brava & Costa Barcelona-Maresme | Vacationals Turistics Houses | 17 | L'Escala |
 | Metropol Hotel Costa Brava & Costa Barcelona-Maresme | 4.0 star rating | 80 | Lloret de Mar |
 | Miami Estartit Hotel Costa Brava & Costa Barcelona-Maresme | 2 Keys | 44 | L'Estartit |
| Miami II . Hotel Costa Brava & Costa Barcelona-Maresme | Vacationals Turistics Houses | | L'Estartit |
 | Milà i Fontanals 22 - Three Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Roses |
 | Miramar Hotel Costa Brava & Costa Barcelona-Maresme | 4.0 star rating | 54 | Lloret de Mar |
 | Miranda Hotel Costa Brava & Costa Barcelona-Maresme | Hostel 2* | 39 | Blanes |
 | Miro - Six Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | San Antoni de Calonge |
 | Mismar - One Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.10 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.11 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.12 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.2 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.3 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.4 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.5 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.6 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.7 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.8 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Mismar - One Bedroom No.9 Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
| Mitus Hotel Costa Brava & Costa Barcelona-Maresme | 1 Star | 12 | Canet de mar |
 | Moli De Mayola - Six Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | San Antoni de Calonge |
 | Molina - Two Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Llança |
 | Monica - Five Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | San Antoni de Calonge |
 | Montañamar Lloret Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 67 | Lloret de Mar |
| Montalpark 9 - Three Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Caldes D'estrach |
 | Montana Hotel Costa Brava & Costa Barcelona-Maresme | 1 Star | 32 | Roses |
 | Montecarlo Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 126 | Roses |
 | Montemar Maritim Hotel Costa Brava & Costa Barcelona-Maresme | 4.0 star rating | 187 | Santa Susana |
 | Monterrey Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 112 | Platja d'Aro |
| Monterrey Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 135 | Roses |
 | Montesa - Five Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Llagostera |
 | Montgri 151 - Two Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Montgri - Three Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Empuriabrava |
 | Montjoi Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 109 | San Feliu de Guixols |
 | Mont Lloret - Seven Bedroom Hotel Costa Brava & Costa Barcelona-Maresme | Without Official Category | | Lloret de Mar |
 | Mont-Rosa Hotel Costa Brava & Costa Barcelona-Maresme | 3.0 star rating | 120 | Calella |