Valentino met us on arrival as planned, showing us through the apartment and pointing out amenities on a map he has drawn up of the local area. He also responded quickly to emails asking questions during our stay. The apartment is in a perfect location: tucked away in a quiet street close to the colosseum and a 5 min walk to the Metro station. There are plenty of shops nearby selling everything needed for self catering. The apartment is cosy but was very comfortable for our family of 4 with 2 teenagers (2 sleeping on the sofabed). It is very secure and quiet at night with no windows facing the street.
I highly recommend it as a place to stay if it is available for your trip to Rome.