Depends how long you been living in the apartment, how much maintenance was done, what condition was it when you moved in.
For example when we moved, my Hubby had been renting that apartment for 26 years, 1st alone then with me, very little maintenance had been done, so when we moved they just took the keys and paid for all the works themselves before the new tenants moved in.
I believe the rules on painting are, they should paint every 5 years, if you lived in there for more than 5 years and it never got done, they cannot charge you for new painting (check your tenancy agreement or the rules on mieterverband
http://www.schweizerischer-mietersch...ation/f259.cfm (hope this is the right link) they list all the rules for both parties.
Regarding the broken fan, it is you duty as the tenant to report anything belonging to the landlord that is broken or damaged, so if its broken and you didn't report it, then they can charge you for it (or you change it yourself). A friend got charged CHF800 for a broken fan in the bathroom although they never used it and didn't realise it was broken.