We recently stayed at Giulia's apartment in Rome and it was absolutely perfect for our family of four. The apartment was exceptionally clean, very spacious, had great cooking and cleaning facilities and is even better than shown in the pictures. It's location means it is within easy walking distance of most of the attractions, especially the Vatican, The Spanish Steps and Trastevere.
Giulia was the perfect host, and couldn't do enough for us - organised taxis, recommended restaurants and let us know about a fantastic gelato shop around the corner! While the neighbourhood is lively and great for families or couples, the apartment is in a very quiet internal courtyard.
I would have no hesitation in recommending Giulia's apartment and you would do well to find a better one or a better host in Rome.