The first time I had my own place, it was on the top floor of a brownstone that used to be a private residence before it was divided into apartments. In my bathroom, there was what used to be a laundry chute to the basement but when the building was divided they sealed it up except for the chute between my bathroom and the bathroom of the guy who lived below me. Don't know why it was that way, it just was.
The floor in my bathroom squeaked so when he was in his bathroom he could hear that I was in mine and a few times I heard him desperately calling up that he was in *dire* need of toilet paper and could I toss a roll his way!
Oh! And if the tenants of any of the other 5 apartments flushed their toilet while I was showering it would suck up all the cold water and I'd get scalded. In fact, I think I am living in the lap of luxury now because you could flush any toilet in my house while I was in the shower and I wouldn't even notice
Hey, I'm not hard to please!