We stayed at the apartment for only one night, but we were really happy. The place offers two double beds and one single bed, so it is possible to stay there with 5 people. The place was really clean, offered a nice kitchen and good air conditioning.
The best in my opinion is the location: 3 minute walk to the Trastevere train station to get quickly to the airport or take the tram to the other side of the river. Testaccio the party and bar quarter of Rome is also just a short walk away. Next time I am in Rome, I will definitely stay here again!