It is ideal to have enough space so each of your child has its own bedroom. But what if you have just one bedroom and four kids? The best way out is opting for bunk beds that will accomodate all of your kids plus will help solving space issues.
Here is another combination kids bedroom with a reading nook along the bedroom wall (the lower circle). Asymmetrical shelves and circles. The lower circle by the floor becomes a reading nook. I want this in my room!