My last flat I had a little old lady upstairs. Could hear her shuffling around a bit, hoovering, watching Wimbledon. And she couldn't hear anything from me. Excellent. (Oh, and her radio at night - but she slept in the bedroom over my spare room, so I wasn't disturbed.)
Now I have a young bloke above me, but he's also not particularly disruptive. The layout of this block is nice, so we don't share any internal walls.
Oh! But I do have a story from the first year of uni. The guy in the room above me seemed to only own four songs - Don't wanna miss a thing, When you say nothing at all, something by Westlife and something else. He would play a single one of these songs over and over for hours, into the wee small hours of the morning. Omg argh.
And whilst not exactly *my* flat, Guido has neighbours with an irritating taste in pseudo-folk music. It is truly awful. And very loud.