We had a very nice time in the Trastevere apartment. The location is close to the buzzing center of Trastevere but still in a quieter alley way. We covered Rome mostly by foot but public transportation (f.ex.Tram 8 to Piazza Venezia or Busses) are also very close by. Everything you see in the pictures is as stylish and beyond. On top of that the place is impeccably clean, the kitchen is functionally equipped and communication with Riccardo and Ariel who picked us up at the airport was flawless. Riccardo gave us an extensive list of recommendation for restaurants and shops which was very helpful and the few we tried proved to be very good as well.
The only advice I would like to give is that, since you are very close to the hipper ares of Trastevere, you might be able hear some of partying going on outside - specially on the weekends - even thought the windows are new and very well insulated!
Otherwise 5 stars all over!!!