I paid for day passes at Midvalley while on a business trip.
Gym is relatively well maintained but need to check if the equipment has broken cables that can stratch your hands.
Changing rooms are clean although shower cubicles and changing cubicles are small but ok. A lot of hair blowers. Haha! Not sure if the guys rooms have it but the ladies, yes.
Padlocks for the lockers. There are a lot of lockers. CF does have some extras at the entrance but they usually run out.
Midvalley one is big and I remembered seeing one trainer walking around. I saw more during the evening time. I also sometimes sneak into the "personal training area" because the medicine balls are there. 3 trainers saw me using it and didn't chase me away so ok lor.
1 big towel 1 small towel per session.
One of the staff will hog the telephone so if you're unlucky to get one of them, it's annoying.