I live in an apartment building sort of. Its just a few 3 bedroom apartments stacked on each other with a basement. I live on the ground floor level. The basement is our only problem, we get noisy at times, hey I got 3 brothers. Even with that, there was only complaint once throughout all the years. The people living under us changed many times; first I remember an old Polish guy who smoked, then some other dude from eastern Europe, the Polish guy again, and then a Russian couple in their fifties with another guy, also Russian who would shovel the snow for us. Then comes my current neighbors living in the basement, they are Muslim.
Turns out they don't have sensitive ears at all, in fact they are practically deaf. They blast their Arab radio, playing Arab music, and its not even good! I always thought Arab music was held to a higher standard, but I never really heard it, turns out I am wrong. So we do what they do, bang on our floor which is their ceiling, doesn't work. When they do it, it works, talk about proportionate response (they are muslim I am Jewish = Gaza and Israel). Oy! and when they scream at each other in Arabic, it just is so annoying, thankfully they stop for the night. Have you ever heard people scream in Arabic, its quite loud (not quiet loud, its read kwite lowd).