If I was you, I would only treat a room if it is necessary. It sounds like the room is not perfect, but few rooms really are. Obviously, you could deaden the room by hanging something like carpet, but I would only recommend that if you heard somethng about the room that you didn't like and thought that treatment would help.
Sound treatment can get expensive and if it's not purposeful, you could be doing more harm than good. Have you ever tried recording in the room? If so, what did it sound like? If not, try it.
Good luck!