Attribute three roots

You can talk to the property owner or upstairs. If not, if the other party has really reached the level of disturbing the people, you can call the police. Neighbors after all. Suggest friendly negotiation and communication. You should be friendly, too The police or the property will be out of control for a while. If the rented owner is fine, the property can be driven away. If it is a real owner, it will be more difficult.