I was at this gym for 7 weeks. It's centrally located. €90/month which seems to be the norm for…read moregyms in Florence unless you venture out to the periphery ( Kokoakan €55/ month last year).
This gym is super small. So small that putting plates on the military press Hammer strength type machine is a contortionist move. They only have one preacher bench, and one curl bar but s variety of other machines. A small room with dumbbells and four adjustable benches, a smiths machine, a squat rack, one incline and two regular benches. Several treadmills, three stationary bikes sardined into a small space. Obviously no pool, or sauna, juice bar etc. They have change rooms, clean showers lockers. Bring your own lock, towel etc.
Overall a good place to work out and away from home and maintain. I never found it super crowded. Front desk people speak English and are friendly enough. The gym is mostly full of locals and some international university exchange students. No meat heads benching four plates.