Originally Posted by Sly

They would also fine the apartment.

Here's what you do: tonight wait until your city noise curfew is over, probably around 10 PM, though on a weekend that might be later. Wait an hour or so, then call the cops. Tell them that you hear the fire alarm ringing next door and you are concerned. They'll come out, most likely have probable cause to knockdown the door and check out the situation. Apartment company will have no choice to fix the issues at that point.