6 months ago we moved 3 into the same room to combat sleep issues! So we currently have a 9 year old, nearly 7 and nearly 4 year old all in the same room - they call it the sleeping room! One other bedroom has been converted to a playroom and the other into a dressing room.

It works fine most of the time. Only negative is when one child is unwell or has a cough or when one can't sleep initially and subsequently tosses and turns. Other then that they love it, sleep through the night a lot more and tend to also sleep in in the mornings!