I love the idea of building the bed into the structure of the room for children's rooms. Beds are large pieces of furniture and take up space. This allows for more floor space. I would make the bed into a bunk bed for both Laura and Hannah!
Make your own fireplace.no chimney required. Use an old mantle structure and have several candles serve as your "fire." This lovely vintage room lends itself perfectly for this idea well. White mantle and mirror, candles and lanterns.