We were staying at Francesco's apartment for the second time. Very nice, comfortable, spacious and clean. Most of all I like the big table in the kitchen area.
Good location, nice region. Just 10 minutes by walk from the metro station Ottaviano; 20 minutes from Vatican. Will definitely recommend this apartment for a family of 3-4 persons.
Also would highly recommend a restaurant "Da Tesone", which is very close (just 5 minutes walk from the apartment). But please note that it's better to reserve a table in advance since it's very popular among the local residents.