I make it a point to stop in Nashville on all my trips down to Florida.
I stay at the KOA. And I treat myself to one of their more expensive pull thru sites with a long raised concrete patio that you pull right up next to with a full set of wrought iron patio furniture included! Ahh, just pull in and open the door and relax. :C
If you plan to stay there more than one night to see Nashville the main desk has all the info you need for sightseeing and a shuttle bus to take you to almost all of them. Also, all the staff there are IMHO 5 star.
Or if you have a MH with a toad, everything is just a few minutes down the road from the CG.