Marie's place is beautiful. It's amazing that you're in the Nashville area and feel almost like you're out in the country. The bathroom upstairs is fantastic. She prepared us a top-notch continental breakfast - SO GOOD. The place is a bit further from East Nashville/Downtown than we realized. It took us a 17 minute Lyft ride to get to East Nashville.
We used to never rent "private room" Airbnb's, but tried one a couple of years ago and had a really good experience. The only thing that surprised us a little bit was not having a private entrance (the back door opens to their kitchen), so it felt less private. It has more of a bed-and-breakfast feel to it, and a lovely bed and breakfast it is. That works really well for me, but my wife is a very private person, so it was a little harder for her to be comfortable. But in the end, we never crossed paths with Marie and her husband until we were leaving, and they were delightful people - very nice and easy to talk to.
Oh, one more thing: Marie was very responsive to messages throughout the process.