I dunno. That sofa does not look comfortable, and the arms really don’t hold enough books. Besides, where would you put the end table?
A lot of the designs here are pretty and interesting, but honestly, most of the people I know are divided into two categories: those who own no (or very few books) and don’t really care for bookcases, and those who own an enormous number of books, for whom style at the expense of the ability to store mass quantities is valueless.