I'd feel like I'm working in a gorgeous modern library if I'm lucky to have a space like this. If you have a gazillion books, this is the way to do it. It sets the tone of the whole space and makes it so conducive to learning/working. Go vertical and make the shelves full ceiling height. That chrome ladder is not only useful but also brings some industrial vibe to this room.

If only I have that much books.... or the extra space... haha