floor-to-ceiling built-in shelves to provide storage for books and display space for collections, as in this home office. A library ladder runs on a track around the perimeter of the room to provide access to books on high shelves.
Blue is the warmest colour. If you don't have room for a four-poster bed then a pelmet like this one by Paolo Moschino can be a creative alternative. The linen curtains are made from "Nyvelle Oyster" by Paolo Moschino for Nicholas Haslam.