Jacopo and his family made our stay truly incredible. I have stayed in many airbnbs, in many countries (including others in Italy) and they were by far the best hosts I've ever had--responsive, full of interesting tips about the city, and genuinely excited to share Rome with my boyfriend and I.
The apartment itself is spacious, clean, and very comfortable. It is also in a great area--right by the subway, and within a very short walk of some of Rome's best food in testaccio. You can be in the colosseum in ten minutes, or you can avoid touristy areas and feel very much at home.
One piece of advice: on Wednesday mornings, the Pope gives an address in Vatican city to the public. Definitely worth going to.
In short, would highly recommend this place to stay!