2 adults and a 12 year old.
This is a rustic top floor apartment in a delightful block right in the heart of the Centro Storico literally minutes from the Colosseum. The apartment itself is large and comfortable - think more cluttered and interesting than clear and chic. The rooftop garden is every bit as wonderful as the photographs. It faces north which is good because you get the shade and there are views of the Altare della Patria. The kitchenware needed a clean but otherwise the place was clean.
There are good restaurants, coffee shops and gelateria within 2 minutes walking distance. We did very little shopping so I can't comment on supermarkets as we didn't really search for them.
There is a taxi rank 10 minutes walk away.
All of the major attractions are within 1.5 miles and walkable with a little effort. The neighbourhood is safe for families as was a majority of the Rome that we visited.
The host was helpful but non intrusive.