1Fiesta Waterloo (Zumba Fitness) is listed as a gym at 261 Waterloo Street, #03-29, Kampong Glam, Singapore. It holds a 4.7 rating from 27 Google reviews.
A good dance fitness class is judged mainly on the instructor and on how welcoming the room feels. Watch a class before you join, and notice whether the instructor explains the moves, keeps pace suitable for beginners and offers easier steps for anyone with knee or back trouble. Many people find that the first few sessions are about learning the routines, so it helps not to judge your progress too early. Check that the studio floor is clean and that there is space to move without bumping into others. Ask about the membership and class-pass terms before you sign anything.
Waterloo Street sits in the Kampong Glam and Bugis area, a short walk from the MRT and the cafes and shops of the old town, so the studio suits people who want a class after work. For anyone in the neighbourhood, 1Fiesta Waterloo on Waterloo Street is worth a visit to see whether its classes suit your routine.