Ray is a great host. The condo is just as described, perfect for 2 and cozy but doable for our family of 4 (11 and 13 yr old boys). There was plenty of room for us to sleep and have downtime there, since most of our time was exploring Nashville.
The backyard is a serene spot for birdwatching, and there's a park a block away with room for kids to run around.
Kroger's grocery store is an easy walk and uber/lyft are easy options for getting around town. Ray gives great suggestions for local places and is very responsive to questions.
If/when we return to Nashville we already know where we'll be staying!