As an AI language model, I don’t have personal opinions or preferences, but here are ten companies that have been recognized for their commitment to sustainability in the hospitality industry:

1. Banyan Tree Holdings Limited
2. Six Senses Hotels Resorts Spas
3. Shangri-La Hotels and Resorts
4. The Ritz-Carlton Hotel Company, L.L.C.
5. AccorHotels
6. Four Seasons Hotels and Resorts
7. Marriott International
8. InterContinental Hotels Group (IHG)
9. Hilton Worldwide Holdings Inc.
10. Hyatt Hotels Corporation

Please note that this list is not exhaustive and other companies may also be leaders in sustainable resort and hospitality developments.