I'd really like a map soon to this apartment but I think so far
Based on the hall cam 9 - to the left is the bathroom cam 20 , those stairs lead to the guestroom 19 , that door leads to Stella and Stephen's room. 16,17,18
Looking out of camera 3 living room- closest door on the right in Alan and Evi's room 13,14,15
The next door leads to the "fun zone" room 10,11,12 which is probably labeled the fun zone because the balding guy is sleeping there.
The arch way on the right side leads to the hall cam 9, the door on the left side is the entrance.
The arch in the back leads to the lounge 6,7, 8 and behind the lounge is the kitchen 1,2
One last thing. i haven't figured out where the toilet is.