Loyalist Travel| Hotel | Program | Got an upgrade |
|---|---|---|
| Montcalm East, Autograph CollectionAutograph Collection · London, United Kingdom | Marriott Bonvoy | Not enough stays yet |
| Montcalm Mayfair, Autograph CollectionAutograph Collection · London, United Kingdom | Marriott Bonvoy | Not enough stays yet |
| Montcalm Royal London House, Autograph CollectionAutograph Collection · London, United Kingdom | Marriott Bonvoy | Not enough stays yet |
| Mostar Marriott HotelMarriott Hotels · Mostar, Bosnia and Herzegovina · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Munich Airport Marriott HotelMarriott Hotels · Munich, Germany · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Munich Marriott Hotel City WestMarriott Hotels · Munich, Germany · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Myconian Avaton, Mykonos, a Member of Design Hotels™Design Hotels · Mykonos, Greece | Marriott Bonvoy | Not enough stays yet |
| Mykonos Theoxenia, a Member of Design HotelsDesign Hotels · Mykonos, Greece | Marriott Bonvoy | Not enough stays yet |
| Mystique, a Luxury Collection Hotel, SantoriniThe Luxury Collection · Santorini, Greece | Marriott Bonvoy | Not enough stays yet |
| NEMI, Milan, a Tribute Portfolio HotelTribute Portfolio · Milan, Italy | Marriott Bonvoy | Not enough stays yet |
| Neues Schloss Privat Hotel Zurich, Autograph CollectionAutograph Collection · Zurich, Switzerland | Marriott Bonvoy | Not enough stays yet |
| Nice Centre HotelTribute Portfolio · Nice, France | Marriott Bonvoy | Not enough stays yet |
| Nobis Hotel Palma, a Member of Design Hotels™Design Hotels · Mallorca, Spain | Marriott Bonvoy | Not enough stays yet |
| Nomad Design & Lifestyle Hotel, a Member of Design HotelsDesign Hotels · Basel, Switzerland | Marriott Bonvoy | Not enough stays yet |
| O by Myconian, Mykonos, a Member of Design Hotels™Design Hotels · Mykonos, Greece | Marriott Bonvoy | Not enough stays yet |
| ORA Hotel Priorat, a Member of Design Hotels™Design Hotels · Torroja del Priorat, Spain | Marriott Bonvoy | Not enough stays yet |
| Odera, Tinos, Autograph CollectionAutograph Collection · Mykonos, Greece | Marriott Bonvoy | Not enough stays yet |
| Old Town Chambers, Autograph CollectionAutograph Collection · Edinburgh, United Kingdom | Marriott Bonvoy | Not enough stays yet |
| Olea All Suite Hotel, a Member of Design Hotels™Design Hotels · Zakynthos, Greece | Marriott Bonvoy | Not enough stays yet |
| Opatija Marriott Resort & SpaMarriott Hotels · Rijeka, Croatia · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Ortea Palace Hotel, Sicily, Autograph CollectionAutograph Collection · Sicily, Italy | Marriott Bonvoy | Not enough stays yet |
| Palacio Santa Clara, Autograph CollectionAutograph Collection · Valencia, Spain | Marriott Bonvoy | Not enough stays yet |
| Palacio Tondon, Autograph CollectionAutograph Collection · Logroño, Spain | Marriott Bonvoy | Not enough stays yet |
| Palazzo Velabro, a Member of Design Hotels™Design Hotels · Rome, Italy | Marriott Bonvoy | Not enough stays yet |
Got an upgrade is the share of stays that got any room upgrade, out of those that said, with recent stays counting more. It shows once 3 stays have said; until then, a dash.