Overall we enjoyed our stay. Check in was a little strange as we met Brian in person (the first time I've not used a lock-box to get the keys) and he was telling us about the various stays he's taken in AirBnBs and how they were all bad (he rated them between C and F), so that set a weird tone and had us on eggshells a bit. But after that communication was good and we didn't interact much with Brian which was nice (we appreciated the privacy).
As for the space, it is a basement unit so the bedrooms were dark and the ceiling creaks a bit when the upstairs tenant is home. But there is plenty of light in the living room and the yard is absolutely beautiful and a pleasure to sit and look at. We did have to be careful with our dog because the yard is shared with the neighbor whose dog plays there from time to time. The beds were very comfortable and the TVs and such were excellent. Other than that I would say it is a bit bare bones, especially in the kitchen, but that might have been fine if it had been just me and not my partner as well. The last thing to say is that it is a very steep and narrow driveway so it took some adjusting to get comfortable getting on to the street (which was quiet but surprisingly busy).
The recommendations Brian provided for the area were great, especially the Edmonson Agricultural Center where there were beautiful trails to walk our dog. The neighborhood can get a lot of traffic but it is a good location next to Latin restaurants/Plaza Mariachi on the Nolensville side and plenty of other restaurants and shopping on the Brentwood side.
So overall we enjoyed our stay. Some of the things mentioned here we knew about beforehand, but we were on a tight timeframe looking for places, so I'm happy to have found Brian's place. I would recommend it, especially for traveling nurses/single people.