The Fitness Center at DoubleTree by Hilton Hotel London -Tower of London
The fitness center at DoubleTree by Hilton Hotel London -Tower of London is mentioned by experts. Out of 6 publications tracked on TripExpert, 2 mentioned the fitness center, including Zagat and Star Service.
DoubleTree by Hilton Hotel London -Tower of London 
Zagat
Star Service
Zagat "Also on-site are a restaurant serving British cuisine, an atrium lobby bar and a 24-hour gym"
Star Service "An all-hours gym keeps jetlagged travelers in shape"
