I don’t know about anything but Germany, but here you’d have to sue the owner yourself. Enjoy. Well now, since AirBnB is illegal in Berlin he might actually get fined.
That's awful. In the US we have misdemeanor noise violations that carry a fine (or jail time if you refuse to pay).
Neighbors will call the police if your party is too rowdy. They'll show up looking for underage drinkers. Usually if you are nice to the cops and promise to be quiet (and everyone they see is 21+) they'll just warn you and not write a ticket.