The Fitness Center at The State Hermitage Museum Official Hotel
The fitness center at The State Hermitage Museum Official Hotel is referenced by writers. Of the 4 professionals tracked on TripExpert, 2 acknowledged the fitness center, such as Frommer's and Oyster.
The State Hermitage Museum Official Hotel 
Frommer's
Oyster
Frommer's "At this writing a spa and gym are on target to open by 2015"
Oyster "Other features include a spa, gym, pool, 24-hour business center,
and free Wi-Fi"
