I have a large 2 storey apartment but I don't use the upstairs for daycare, that's my bedroom, etc. So I use my living room as my daycare room and we do an entire cleanup after lunch and circle time, then I set up all the playpens in the living room and in the dining room. I get my heavy lifting workout setting up and putting away playpens daily, hehe. Three-four children sleep in the living room and the newest one sleeps in the dining room until they are all old enough to sleep on cots in the living room and playpens aren't needed any more.