The Fitness Center at The Royal Sonesta Washington DC Dupont Circle
The fitness center at Kimpton Hotel Palomar Washington DC is mentioned by travel writers. Out of 14 publications that we monitored, 3 mentioned the fitness center, like Fodor's, Rough Guide and Star Service.
The Royal Sonesta Washington DC Dupont Circle 
Fodor's
Rough Guide
Star Service
Fodor's "The heated outdoor pool is the place to be during the summer months, and the fitness center is open around the clock"
Rough Guide "Excellent boutique accommodation with flat-panel
TVs and CD players in the rooms, an on-site pool,
fitness centre, stylish lounge and location close to
the Circle"
Star Service "There is also a well-equipped 24-hour gym, and the cardio stations are set up for views of the pool"
