We have a three bedroom house.....each of our girls had their own room. But when #3 came along it was thought we would move #1 and #2 in together, and #3 (the newborn) would have her own room.....its all gone a bit haywire at the moment.....and #3 is still in our room. At night we move her into the lounge room (she still in a cradle). There were many ways we could work it (#1 with #3, #2 with #3...) , but when Samantha gets too big for the cradle she will be having her own room and the older two sharing. I think under 6 months, their sleeping is so unpredictable, i didnt want to run the risk of waking up another child at 3am when i already have one awake - KWIM? Good luck with what you decide.....