This is certainly not a fancy place so manage your expectations but the value is quite good (especially for Rome in the summer) and I'd recommend it as such.
The location is absolutely perfect in Trastevere. You're about 20-30 min walking from most of the notable sites in Paris and Trastevere is a hub of youthful fun and activity in the evenings with tons of restaurants and bars.
Maurizio is an excellent communicator and problem solver. He would reply rapidly on WhatsApp and also allowed me to check-in earlier without a fuss.
When there were issues with the air conditioning in my first room, he tried to fix it but then ultimately transferred me to a larger room where the a/c was working fine (at no add'l cost). He was very apologetic about the situation.
You're also close to the H bus which goes to/from Roma Termini. Be careful not to take the H63 bus (or something like that) to get to the Airbnb as it travels a similar first half of the route but then goes to St Peter's. It's just H. I made this mistake and had to hop off halfway through and walk the rest of the way.
Also make sure you purchase a bus ticket and validate it especially for the return as there are uncompromising ticket inspectors that board the bus at the train situation before letting you off. I mistakenly didn't validate my ticket but they didn't care and charged me a EUR 50 fine.