Yeah, i had a problem once like that, neighbours in an upstairs apartment used to have arguments pretty much every other night and constant at the weekend. SHouting and screaming at each other at 3 in the morning.

Asked them nice but they denied it was an issue. So as I could drink a lot, got drunk every night anyway and left two vacumn cleaners run all night in the bedroom up against the wall, strangely soothing. It Took 4 days for them to ask if I could hear the noise and I said it was to drown out their shouting. They got well annoyed, but he ended up smacking her around and she threw him out. She apologised for the noise and I ended up shagging her for a while. job done.

Always rent top apartment.