I have a two floor apartment and don't even use the top floor at all. I use the main floor which is full living room full dining room, full kitchen & 1/2 bathroom. My living room is my toyroom and my sleeping room. I put up 3 playpens and take them down daily. One child sleeps on my couch and I put a sheet and pillow down for him daily and in the corner of my living room is a toddler bed that stays there all the time and I kind of pile toys on it in the evening and have some of the other big toys around that area. It is behind my centrally situated furniture so that it doesn't bother me on weeknights or weekends, it just kind of shortens up the room. So I have no problem sleeping all five children in the same room.

Sometimes when I have a new child start who is crying or waking earlier I put them out in the dining room, but then I can't work in the kitchen at all during naptime and can't use my main floor at all so that sucks. That's why I prefer all of them in one room. Oh yes, and I have blackout curtains so it's pitch black when they are closed and the children fall asleep quickly.