The Fitness Center at Marriott's Grande Vista
The fitness center at Marriott's Grande Vista is referenced by professional reviewers. Out of 3 publications tracked on TripExpert, 2 mentioned the fitness center, including Oyster and Star Service.
Marriott's Grande Vista 
Oyster
Star Service
Oyster "It’s chock full of amenities, including a golf course, an excellent fitness center, a full-service spa, and several pools and restaurants"
Star Service "Everyone is welcome to use any of the seven free-form and lap pools, wading pool, two whirlpools and four lighted Har-Tru tennis courts, but the gym, sauna and spa are for adults only"
