I was there for a few days in June 2006. Nice folks. Fuel was decent compared to elsewhere, $4.45 at the time. Tie down fee was $5 a night. I was charged for two nights and there for three.
There's a line of hills along the south side but using the VOR IAP keeps you well clear. Knoxville approach was great help.
The kicker was when I was stuck there for the third night. Everyone else I was meeting for the weekend were driving out. I was just two weeks shy of taking the checkride for my instrument rating and the airport was socked in with clouds and drizzle. Pretty benign except for you couldn't see much more than a thousand above the airport.
So, here I was stuck for another day. I decided to head off to a hotel for the night. I figured it was just as cheap to rent a car than get a cab so I did that. Hotel in June, right at $38 at the Comfort Inn, very reasonable.
The Enterprise guy inside the airport building offered me a car at a discount that otherwise down for maintenance but ok for into town and back or short jot. I got it for $35. Then, the next morning when I took it back... the shocker. 27% tax on the rental car. Yikes!
But, the area is beautiful. Enjoy the ride.