The location of the apartment was fantastic! It was near a lot of transport (tram, bus, termini station about 10-15 min away walking). We had no trouble arriving and leaving from various points (Ciampino and Fiumicino Airports, Termini and Tiburtina stations, etc) including for day trips. As mentioned by other guests, since it's right near the gare routière, there is quite a bit of street noise, but at night it's less frequent (I'm guessing since fewer trains run late).
I found the interior decoration very charming and more personal than other airbnb rooms I've stayed in. There was a little kitchen with hot plates and a good supply of dish and cookware. Even in April it was a little chilly at night but there was nice heating so we weren't cold. Since it was in a basement, it could generally be a bit damp but nothing too extreme or uncomfortable.
Andrea was out of town during our visit so her friend helped us with the check-in. Both her friend and Andrea were very communicative and responded promptly is anything came up. For example, there's a washing machine available and we weren't sure how to work it. Andrea quickly was able to let us know to turn on and off the water and all was well.
We stayed about a week and overall I recommend the place :) It's nice to come back to after a day of sightseeing and the location is great. There was also a cute park about 10 min away walking and a bunch of good boba shops even closer by.