We stayed for 4 nights over the holidays with 4 adults, a 3 year old, and a 9-month old, and had a wonderful stay. Katie was super communicative and quick to reply and made the whole arrangement super easy.
The house is very spacious with two bedrooms downstairs (including one with bunk beds), 2 bedrooms upstairs, and another little nook upstairs that has an air mattress. We were very easily able to spread out and never feel like we were on top of each other. They have a couple of pack and plays which I wish I had known before we went which was great for the little one! My 3 year old couldn't get enough of the porch spring and luckily one of us was musical enough to enjoy the piano with her as well. The house is beautifully restored and decorated. I used to live in the neighborhood and have visited many old houses while house hunting and rarely if ever came across anything this nice.
The street is a little traffic-y as Ellington Parkway is a few blocks down, but I never noticed it from inside the house as it was pretty tranquil.
The location is also great. There are several awesome restaurants and bars in the immediate 1-2 block radius like Holland House, Pharmacy, and Mas Tacos. It is a little bit of a hike down and across the very busy Gallatin road to Five Points with even more food and beverages, but a super short and cheap uber ride can be had for under $5. If you're just going to be staying around East Nashville and downtown with an occasional trip outside of that area I'd say you could easily get by with uber and no rental car as this is so centrally located.