I highly recommend staying at Alessandro's place. The apartment is very nice, well located to explore Rome and in a quiet and very Roman (not very touristy) neighbourhood, with some good restaurants, cafés and bars in the surroundings. There're two bus/tram stops a few minutes walking and the closest metro station is only about 10 minutes away. Alessandro is a very friendly host and communication was very smooth. The apartment has all the required amenities, is clean and if you're interested in literature and/or cinema, it has also a nice collection of books and films on the bookcase in the living room. Bottom line, it's a hit that you shouldn't miss.