Room mates are such an odd thing. Here in New Zealand we almost never share a single room past childhood. We would rather put up a dividing wall than have a shared larger room. It just makes so much more sense.
This is the type of places we have here for our first years (In fact I stayed in a room exactly like this)
Source
I am enjoying the series, keep it going.
RE: Living with Roommates, part 2: Schedules, Cleanliness, and Boundaries