Claudio and Betty's place is great. I stayed for 4 nights, with my Mother and 10month old baby. Betty was extremely helpful in helping us plan our trip. She booked a taxi for us from the airport, with a car seat for my daughter, as well as providing a travel cot and high chair in the apartment. Communication was great.
The apartment was very clean, well stocked and a great place to relax after a busy day sightseeing. Perfect location next to the metro, easy access into the historic centre. Can walk to colosseum in 25mins. The only downside is that it can be quite noisy at night, especially in the second bedroom, with the bar a couple of doors down, but this didn't detract from our stay. Would definitely recommend this apartment.