The shower drain was clogged with hair from previous tenants and showering was a drama. For a week I was forced to do it at a friend's house. Dust everywhere, including the dishes available that I had to wash and rewash several times with gloves to use them from the first
If you rent apartment to student for a year or more, it’s ok, but if you rent for a week to workers who stay all day out, you can not pretend they wash by themselves bed linens or towels, without tell in ads in AirBnb, but need to change every 2-3 days.
If you don’t have air-conditioning systems, I believe you have almost windows to open.. not 2 micro ones. And even if you provide a fan, keep care to provide it clean and not addicted of dust and soot on the blades: using it would be as suicidal as putting a gas tube in your mouth.
Invest more in cleaning service.