This is the perfect place to put a pull out bed. I always look at those beds and think they're impractical because it's too hard to leave all of the open floor space needed for one but I'd happily do it for this library/reading space
We love everything about this window-filled corner, not to mention the view. The picture window maximizes the view, while the double-hungs give ventilation. We also love the low built-in book cases that have function as window seats.