Who and what can you hear from inside of your apartment?

I just moved into a top floor apartment in an old building. I can hear some traffic from the window, the plumbing system (not often), but mostly I'm bothered by the thuds that I can hear from the nextdoor neighbours, as well as their opening/closing the door and blinds, if near the wall I can hear muffled talking. Sometimes I can hear a loud thud from downstairs as well.

I know that it's part of apartment living but I am very sensitive to noise. So I was wondering what and who you can hear.