Communication prior to the trip was spot on. Max was waiting for us on the sidewalk outside of the apartment. The apartment itself is ideally located just 1 block away from the Pantheon, so the location can't be beat. There were a couple bottles of water, a bottle of wind, and some homemade cookies (thanks Tina!) waiting for us in the apartment. The convenience store is literally downstairs and convenient and open late.
Max gave us great recommendations for different restaurants, which were all great and not tourist filled. Our checkout was similarly convenient. Max and Tina met us on the morning of our checkout and paid for our coffee and croissants at the little cafe downstairs. They also arranged for a taxi to take us to the train station.
I would definitely stay here again and would recommend to friends visiting Rome.
Thanks Max/Tina for letting us stay at your guest apartment.