This is an amazing place right in the heart of Trastevere. It's very lively and very close to restaurants, coffee shops, bus and train stops. Alessandro has taken a great deal of effort to keep the house very cozy and also provide all the latest amenities like AC, microwave oven etc (which BTW is not easy to find in other airbnbs in Italy).
Just keep in mind that streets can get quite loud during weekend nights so if you are very sensitive to sound while asleep, this may not be the place for you.
Otherwise I totally recommend this place.