Promo pics from 10x04
http://www.seat42f.com/the-big-bang-theory-season-10-episode-4-photos-the-cohabitation-experimentation.html
I wonder how an apartment on the 4th floor can actually flood. Maybe the bathroom, but I'd be even more worried about neighbors downstairs.
shareI can't wait to see this. I expect a pipe broke or something in her kitchen or bathroom. It makes no sense to me though that Sheldon would be willing to move across the hall. I would have thought he'd have Leonard move over there since Leonard is already used to it. Plus we know how Penny feels about Sheldon going though her things.
I really hope they are not going to have Penny turn up pregnant so she and Leonard need the second bedroom.
As for the baby I suspect it's a girl and Raj's dad was foreshadowing when he said he hoped they had a girl.