The Fitness Center at Sonesta Philadelphia Rittenhouse Square
Sonesta Philadelphia Downtown's fitness center is referenced by professional travelers. Of the 6 professionals that we tracked, 3 acknowledged the fitness center, including Gayot, Fodor's and Star Service.
Sonesta Philadelphia Rittenhouse Square 
Gayot
Fodor's
Star Service
Gayot "Extras include a seasonal rooftop pool, a 24-hour fitness center, a 24-hour business center and the on-site Elephant & Castle Pub and Restaurant, serving British pub fare and frosty pints of beer"
Fodor's "For active types, there is a rooftop swimming pool and 24-hour fitness center, plus complimentary vouchers to the nearby Philadelphia Sports Club"
Star Service "Both the new gym and business center are open around the clock"
