We would absolutely recommend this place to friends coming to Nashville!
The 12 South neighborhood is close enough to downtown that we could Uber back and forth cheaply. If you don't want to go downtown, there are terrific restaurants within a couple of blocks of the condo. Parking was included and super easy so we were able to hop on the interstate and see Franklin, TN as well.
My husband got sick on our trip and I still had a delightful time walking around the local neighborhood. The condo was big enough that I could hang out in the other room and not disturb him when he was resting.
The reasons for my 3 stars were that there were a LOT of stairs (something like 34) to get up to our condo. Being so high up definitely helped burn a few calories from all of the great food we ate, and they also probably contributed to the quiet in the condo, so a plus/minus feature. The other reason was that there were six different condos in our stairwell and each probably has a different paint scheme, so the pics online won't necessarily match the actual apartment that you get.
All in all, a wonderful stay!