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.
Amazing built-in nook with glass lantern providing reading light. Reading nook with gray ikat fabric cushions and pillows as well as white roman shades covering windows. Second landing nook with built-in reading lounge and built-in shelving.