Fraile in San An is seriously boiling hot, if they have air con it isn't doing much. If you can cope with that it's alright. Ibiza Town one on Arago isn't as hot but be careful as lots of the equipment wants chucking out and isn't safe (although there's enough to use that is good). Fraile is better value the longer you use it- 15 a day,35 a week,55 a month. There's a gym nearish to Fraile in San An called Lineas and one called Mister Gym next to Ibiza Rocks hostal. There is a gym at the municipal pool in San An as well. Bfit in Ibiza town is all new stuff and amazing.