At the back of the dining room area you could put a wall-to-wall bookcase filled with books. If you don't have that many books you can have a display bookcase where you place nick backs, a few books, some magazine, sculptures etc.
The alcove off the Writing Room in the Tower at Sissinghurst Castle, Kent where the main body of Vita Sackville-West's personal library of books are stored. Sissinghurst was the home of Vita Sackville-West and her husband Sir Harold Nicolson, near Cranbro
Not sure how I feel about the baby-blue shelves. I guess I want bookshelves to be warm, dark, Oxford-y colors. But I love the chandelier and the use of space here. And the ladder.in a just world every library would have, and need, a ladder.