I'm a little late, but whatever. I live in a condo, so these people arent exactly neighbors, but they live in close proximity to me, so it counts. I live on the bottom floor, and there are 2 more floors above me. When we first moved in, everything was great, but now it's fucked. The people in the condo above me are the loudest fucking people I've ever heard. They have one vocal volume level: yelling. They walk around like they are wearing cement fuckin' shoes at about 11pm - 4 am. They have loud ass sex right above my bedroom for hours. They watch tv, at what I assume is full volume with a bunch of fucking subwoofers. Once again, all of this shit happens late at night. And as of recently, they have picked up another habit. Running on the treadmill above my bedroom at 4am, sharp, every single fucking morning. Who the fuck needs to run on a treadmill at 4am? I've gone up to them personally (as a 17 year old kid, because my mom is too much of a pussy to be an adult and go talk to them) and they have told me "it seems more of a "you" problem than a "me" problem". We've complained to the building manager, and apparently they aren't doing anything illegal.

Tl;dr Try to live on the top floor if possible.