Loyalist Travel| Hotel | Program | Got an upgrade |
|---|---|---|
| Clearwater Beach Sheraton Resort on Sand KeySheraton · Tampa, Florida | Marriott Bonvoy | Not enough stays yet |
| Cleveland Marriott Downtown at Key TowerMarriott Hotels · Cleveland, Ohio | Marriott Bonvoy | Not enough stays yet |
| Cologne Marriott HotelMarriott Hotels · Cologne, Germany · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Colony Club, a Luxury Collection Resort, BarbadosThe Luxury Collection · Barbados, Barbados | Marriott Bonvoy | Not enough stays yet |
| Colorado Springs MarriottMarriott Hotels · Colorado Springs, Colorado | Marriott Bonvoy | Not enough stays yet |
| Constantine Marriott HotelMarriott Hotels · Constantine, Algeria · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Coorg Marriott Resort & SpaMarriott Hotels · Madikeri, India · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Copenhagen Marriott HotelMarriott Hotels · Copenhagen, Denmark · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Coronado Island Marriott Resort & SpaMarriott Hotels · San Diego, California | Marriott Bonvoy | Not enough stays yet |
| Corque Hotel, Solvang, A Tribute Portfolio HotelTribute Portfolio · Santa Barbara, California | Marriott Bonvoy | Not enough stays yet |
| Cosme, a Luxury Collection Resort, ParosThe Luxury Collection · Paros, Greece | Marriott Bonvoy | Not enough stays yet |
| Costa Mesa MarriottMarriott Hotels · Los Angeles, California | Marriott Bonvoy | Not enough stays yet |
| Crystal Gateway MarriottMarriott Hotels · Washington, D.C. | Marriott Bonvoy | Not enough stays yet |
| Cugó Gran Macina Malta, a Member of Design Hotels™Design Hotels · Malta | Marriott Bonvoy | Not enough stays yet |
| Culiacan Marriott HotelMarriott Hotels · Culiacán, Mexico · Club lounge | Marriott Bonvoy | Not enough stays yet |
| DAS AFFALTERBACH, Stuttgart, Autograph CollectionAutograph Collection · Stuttgart, Germany | Marriott Bonvoy | Not enough stays yet |
| Daegu Marriott HotelMarriott Hotels · Daegu, South Korea · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Danang Marriott Resort & SpaMarriott Hotels · Da Nang, Vietnam · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Danang Marriott Resort & Spa, Non Nuoc Beach VillasMarriott Hotels · Da Nang, Vietnam · Club lounge | Marriott Bonvoy | Not enough stays yet |
| Davenport Hotel, Autograph CollectionAutograph Collection · Spokane, Washington | Marriott Bonvoy | Not enough stays yet |
| Delta Hotels Anaheim Garden GroveDelta Hotels · Los Angeles, California | Marriott Bonvoy | Not enough stays yet |
| Delta Hotels Antalya LaraDelta Hotels · Antalya, Turkey | Marriott Bonvoy | Not enough stays yet |
| Delta Hotels Ashland DowntownDelta Hotels · Ashland, Kentucky | Marriott Bonvoy | Not enough stays yet |
| Delta Hotels AzoresDelta Hotels · Ponta Delgada, Portugal | 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.