There is actually a montessori school where we do our observations, and beleive it or not the baby beds are on the floor in these really cute little beds. They crawl to bed or get put in there when they fall asleep. I think i Have some pics I will try to upload it so you can see.
I have my son sleep like this as well since he was about 10 months and its not so bad. More children get hurt crawling out of their crib and falling on the floor. For my daycare I like the pack n plays becase its just me here and i wouldnt want the kids wandering around the room, but if they are all one age and you have enough help then its pretty cool, if a montessori environment is what you want.