@Linkat,
we have some what of the same issue.
Only 2 different buildings.
Our neighbors ( that are still here) play horrid polka sounding spanish music so loud that it rattles the windows.
Since they dont speak english, and my own spanish is broken there was little I could do about it.
So I called my landlord and got the name and address of the building owner.
They have been quiet for months.
Do you have someone like that who could mediate?
It can be anonymous ....... especially if others have already complained.