The landlord may only expand or reduce the service package if you agree. Think about placing furniture if you have agreed to this. The landlord may also write off this. However, it is not allowed for the landlord to replace all furniture on its own initiative and then charge it to you by increasing the service costs without your permission.
Does the landlord want to change a service that can only be provided to multiple tenants at once? This is only possible if 70 percent of the tenants agree to this. Those who vote against have to pay for this service if the majority wins. This could be the case if some of the tenants want a cleaning help and others don’t.