The house looks exactly as it appears in the Airbnb photos. It's very close to Roma Termini, no more than a 4-minute walk away. There are plenty of stores and restaurants in the vicinity. The apartment was very clean. We had some problems with noise from the neighbors, but Giulio quickly came and handled the issue personally.
The only complaint I have is that the bed makes fairly loud creaking noises whenever a movement was made. This was somewhat annoying, but not a deal-breaker.
Giulio himself was very accommodating; he allowed us to come before check-in time to leave our bags, and gave us plenty of interesting information about the surrounding area and Italy in general. His responses to e-mails and phone messages were extremely quick and made us feel confident.
Overall, recommended due to the location and Giulio's obvious dedication to being a great host. Just keep in mind that if you're not a very deep sleeper, the creaking bed may wake you up once or twice in the middle of the night.