I have to outline that the most important thing for me and my friends was the location and Sergio's place is really great. You have quick access to public transport and if you prefer to walk you may enjoy nice walks towards the city center. The neighborhood is full with a lot of restaurants and stores and is safe. Trastevere is really popular among the tourists so bear in mind that it is noisy and there are a lot of people, so if you prefer quiet areas that is not one of them :) The apartment is convenient, clean, well equipped and appropriate for three to four guests. Right across the street you may buy breakfast and coffee and the options for lunch and dinner are truly a lot. Sergio is absolutely great host and assisted with anything we asked him and gave us valuable advice how to enjoy our vacation the most.