Moutere Shed is a gym at 65 Kelling Road in Upper Moutere, in the Nelson region, with a Google rating of 5.0.
A good small gym is built around people rather than machines. Look for clean, well-maintained equipment, enough space to move safely, and staff or owners who ask about your goals and any injuries before handing you a programme. If you are new, ask for an induction or trial session so you can see how the place feels at the time you would actually train. Check the opening hours against your week, because the gym you can get to reliably beats the one with the best kit. In a rural community, a gym is often as much a meeting place as a workout space, and regulars tend to learn each other's routines and keep one another turning up. Bring water, a towel and shoes you can lift in, and ask early if you are unsure how to use something.
For anyone in the Upper Moutere area, Moutere Shed on Kelling Road is a local place to train.