I've moved into my new home, which has a marble chip plaster wall:
Is it possible to paint over a wall like this, and how would I do that? I've been told that it requires special treatment, but not what kind exactly.
I think you'd have to plaster that before painting it. I'd give it a few months if you haven't just in case it grows on you - it's an expensive and unique finish, and it's going to be expensive to change, with no way to go back.