Here are some other terms you might use, depending on the context:
* Book room: This is a more informal term for a room specifically dedicated to books.
* Reading room: This term emphasizes the room's purpose for reading.
* Study: This term implies the room is also used for scholarly work or contemplation.
* Bibliotheca: This is the Latin word for library, and can be used in a formal or literary context.
The most appropriate term will depend on the specific use of the room and the desired level of formality.