This apartment in the artsy neighborhood of Trastevere is fantastic! It is situated on a quite side street so it is very quiet (and we went in August). It is very well situated to many stores and restaurants and the apartment itself was large, spacious and clean. We were there in early August and it was extremely hot outside, but the air conditioned apartment was very comfortable.
Our host Giulio was easily available and answered all of our questions. He also was flexible and allowed us to leave our bags in the apartment before and after official check-in and check-out time. I would highly recommend this apartment!
Our host even searched the apartment for my glasses case that I had left and quickly mailed it to me in the States.