This apartment was perfect for a long weekend in Rome. It is big enough for 4 people (the sofa bed is comfortable as well). Everything was really clean, quiet and new. We didn't met Federico, but his father and the other staff and they were all really friendly and helpful. Federico contacted us as well during our stay to see if everything was ok, which was really kind. The location of the apartment is great, you only have to walk 2 minutes to the nearest tram stop to the city centre and Trastevere is great neighbourhood with a lot of nice restaurants and bars. We felt really welcome and there was a map and some tips about restaurants in the appartment, as well as some water and things to eat. I would highly recommend this apartment highly and would definitely use it again when we return to Rome.