The place is very nice and it't right in the heart of Trastevere, my absolute favorite neighborhood in Rome. Even if it's on a busy nightlife street, the windows are towards a quiet picturesque terrace.
Valentina is very nice and helpful and gave us the best tips on where to eat great pizza (Nerone) and other italian meals (Augusto).
The only reason i rate the place with 4 stars is that, even if the outside temperature was 15-20 degrees in november, because of the porcelain tile flooring, the apartment was still a bit too cold.