We stayed for a week and enjoyed the convenience of the flat, close to metro, supermarket and a bus stop.
We used bus when metro didn't work this week after 9pm and a taxi from Trastevere was perfectly reasonable as well.
A taxi rank nearby, 50 eur to the airport, half an hour ride. Although a connection to the train station would be easy as well (one hour ride).
The communication was perfect, all details provided and the flat was clean and well equipped.
It was unusual to be asked to throw away rubbish at the end of the stay. I have never experienced this before on Airbnb.