The Fitness Center at The Bellevue Hotel
Hyatt at The Bellevue's fitness center is referenced by expert reviewers. Out of 9 publications that we monitored, 2 acknowledged the fitness center, like Fodor's and Star Service.
The Bellevue Hotel 
Fodor's
Star Service
Fodor's "The 93,000-square-foot gym, featuring a running track, squash courts, racquetball courts, and a basketball court, is the best hotel gym in the city"
Star Service "The state-of-the-art, five-story, 93,000-sq-ft health club, the city's most elaborate, is a coup for active guests who pay nothing to indulge themselves in the warehouse-sized gym, basketball and racquetball courts, indoor pool, whirlpool and saunas"
