Probably very little noise. Even a child would learn very quickly to be quiet, but more likely they'd just mentally and physically shut down from that kind of abuse. Drains and a hose for sanitation. No one living long enough to worry about food. I don't know. Gross to think about.

Well, I think its dumb but with that being said.

There is a reason they wanted to put labs in the ocean and on the dark side of the moon.

Deep underground seems like your next best option if you dont want any prying eyes.