Members leave over things that seem small. A sweaty bench nobody wiped, hair in the shower drain, a funky smell in the stretching area. They don't complain at the desk. They just stop renewing, and they tell their friends.
Gyms are hard on cleaners. Equipment is touched constantly, rubber floors hold sweat and chalk, and change rooms stay wet all day. A cleaner who comes in once a night and runs a mop around the floor won't keep up. Neither will a schedule that clashes with your packed 6am and 6pm classes.
Owners and operations managers need a clean that matches how the gym is actually used: the right areas, at the right times, done the same way every visit.