The apartment was very nice and quite, just like in the pictures. The neighborhood as well - and very local! I liked that a lot. You have all you need: little restaurants and supermarkets, bakeries etc. To Trastevere it's a nice short walk of 15 minutes.
The check-in: Beforehand he told me to write him as soon as I arrive at the apartment, and that he would be there in 5 Minutes. But I had to wait 20-25 Minutes in front of the apartment. That was a bit stressful because I had an appointment shortly afterwards.
And the wifi was a very slow.