At the top of the stairs we put an organizer with big roomy drawers and hooks for the kids to hang their coats and keep their hats, gloves and that sort of thing away from the front door. Then you turn left and there is an "entrance way" area between their rooms.
This is the girls room (the east side of the room)
The bathroom is "jack and jill" style with doors from both bedrooms so they will all share. We did chose to put a vanity in the girls room as well so that as they grow older they will not have to use the shared space for hair and make-up (yeah, my boys are going to love me for that later!).