I only saw the gym from the swimming pool and the jacuzzi. So, for sure you can have a view of the swimming pool and the jacuzzi users from the gym. I remember to have seen the usual cardiovascular machines. I had the feeling it was not huge. Even less clue about gyms in the nearby zone.
Small but nice sauna (wood benches) and a steam room (platic seats

) and a shower with multi water jets.