When my wife and I went, we rented a cabin that was between Pigeon Forge and Gatlinburg.  I believe that it was actually in the park area, but not positive.  It was awesome.  No cell service and a hot tub outside, among other things.  We drove to a place to white water raft.  Not sure what it was called, but it took about 45 minutes to get there.  It wasn't too bad, just not crazy enough.  We found a nice trail to hike as well.  If you are into that, go to the station and they can give you suggetions on where to go.