It's a big house that's been divided up into a bunch of Airbnbs. So it's all very communal and people will be hanging out and talking in different common areas. If you're a super light sleeper or are looking for a more private experience it's not for you but I personally loved it.
Great location (you do have the planes going overhead but that's Downtown San Diego for you), walking distance to great restaurants in Little Italy and the rest of Downtown.
The room is as described, we didn't bother with the outdoor shower since we were only staying for a night. The toilet being pretty much in the room with just a wooden wall around it was a little... intimate... but not a problem for one night.