Too busy when it gets crowded. Machines are old and just not enough for that many people (e.g., they only have two benches to bench press). The gym has buckets here and there because of leaking pipes, the air conditioning shoots right at some machine stations (so you get chills while using them), and the gym smells bad. Cleaning stations are often out of detergent. The changing rooms are just obsolete. Dirty, small with benches so small you can't even sit. I already tried two pad locks for their lockers and none of them is the right one (you need the right thickness to prevent people could open your locker, but nobody tells you that nor they tell you which one is the right one). The room is super dirty and smells bad. Showers do not allow to change temperature and you must press the power button every 30seconds to continue the water flow. There is no shelf to hold your soap, which then must be put on the ground, where everybody walks, spits and where all the dirtiness flows in general.
But it seems many gyms in town are somehow like this, thus it isn't really horrible compared to the average. Just horrible if you are used to good quality gyms, or simply standard clean gyms.