We are very fortunate in that we don't have noisy neighbours. In fact, the house next door to us is empty right now, so things are pretty quiet. However, we've lived in downstairs apartments and know what it's like to experience this: Things That Go Bump in the Night.
If you have -- or ever have had -- noisy neighbours, you'll appreciate that blog post. (I'm not responsible for any of the language in the comments.)
Run well, y'all,