The Fitness Center at Hilton Brussels Grand Place
The fitness center at Hilton Brussels Grand Place is referenced by reviewers writing for major publications. Of the 2 professionals that we tracked, 2 mentioned the fitness center, like Oyster and Star Service.
Hilton Brussels Grand Place 
Oyster
Star Service
Oyster "The 224-room hotel has an on-site restaurant and bar, a 24-hour-fitness center, 17 meeting rooms, two ballrooms, and a dedicated concierge and foreign-currency exchange"
Star Service "Here, guests have access to a gym stocked with equipment for aerobic activity and strength training"
