Like you I was skeptical about staying in a refurbished garage. It's not at all what you expect it to be. The unit is well insulated from outside noise, it's functionally a private apartment, and there are lots of thoughtful touches William has included. Great location otherwise right off major highways you'll take as your jumping off point into mountain exploration.
The unit might not be for you if: you need absolute silence - a house is attached and so you will hear other people; if you want a kitchen - Asheville regulations prevent that from happening in this unit; if you need more than 2 beds (the king is very comfortable however).
Overall I would come back!