I don't LOVE the rug. but I think the green curtain, built-in shelves filled with books and the (presumably) sliding ladder are wonderful. Its missing a fire place, lots of cozy blankets and an oriental rug!
This grey living room with floor to ceiling bookcases uses a very uniform shelf structure but displays the books themselves in a random, jumbled way, creating a unque and interesting feature wall. I like the grey shelves