I went to Roma for a family week-end, with my brother and my father, and Mattia's apartment was just perfect : brand new, really clean and nice design, a big sunny terrace we fully enjoyed... Mattia was also a perfect host : he was waiting for us in front of the building when we arrived and quickly answered each question we had. I would recommend this apartment without any hesitation to my friends.
An insider tip : we just loved having diner at the "Bistro al' 133", a typical italian restaurant almost in front of the apartment which cooks delicious fresh homemade pasta.