Everything about Mario's apartment was worth booking for: the clean decor, the spacious rooms, the balcony overlooking the neighborhood, and the unbelievably comfortable bed! He was also excellent at communicating with us from the get-go. He responded to my Airbnb messages and texts immediately and made sure we got our keys despite our delayed check-in time; he also did not charge us extra like I know other Airbnb hosts would.
The only issue, really, was that our stay was about 30-35 minutes from the city by metro and 40-45 minutes by bus. We knew this going in, though, so it was mostly our fault that we were surprised at all. This also wasn't too much of a problem because Rome has adequate public transportation; however, it was still an obstacle.
Overall, Mario was an excellent host and the place was great! It made our stay in Rome lovely.