SUMHIIT Orchardgateway is listed as a gym at 277 Orchard Road, #02-11/12, Orchard, Singapore. It holds a 4.9 rating from 35 Google reviews.
A good high-intensity training gym is judged mainly on its coaching and on how it scales sessions for different fitness levels. Watch a session before you join, and notice whether the coach explains each movement, corrects form and offers easier options for beginners or anyone with old injuries. Keep an eye on how the sessions are timed and rested, since good coaches build in recovery. Many regulars find the first few weeks are about learning the basic moves, not chasing the fastest times. Check the membership and cancellation terms, and how sessions are booked, before you sign anything.
Orchard Road is the main shopping street of the city, with the MRT close by, so a gym here suits people who train before or after shopping or work in town. For anyone in the neighbourhood, SUMHIIT at Orchardgateway is worth a visit to see whether its sessions suit your goals.