I usually suggest to my clients that one of the first steps for them before they list their home is to de-clutter, lets face it one of the reasons most people move is that they have too much stuff and need a bigger house. I usually recommend that they store as much of the furniture as they can, then the rooms look bigger and it makes it easier to do my job. Storageunits.com has already done a lot of research on most of the facilities in the area, and here is a link to their top 20 storage units in Nashville.
I can’t vouch for all of their recommendations because I haven’t used them all, but I have used On The Move to move my personal home and they were excellent. I don’t need to store anything, but they were very easy to work with. I’m not making anything on this recommendation, just trying to save customers a little time searching for resources.