I think for a lot of people that are in performing arts, it's easy to fall into the trap of starting to confuse what's real life and what's not, because to your body it's all real.
In design-speak, 'a library' means a room lined with books, floor-to ceiling, but it all depends on the space you have. You may have a free-standing bookshelf of your favorite books if that's all you have room for.