I just went to a good book barn and it made me think, what...

I just went to a good book barn and it made me think, what are the qualities of a good book barn?
- Far from town
- Cheap, esp. coffee table
- Not just "used"; ephemeral/out of print
- Amusing labeling
- Creaky floors
- Weird posters
- Smells like book barn
- Chairs
- What else?