Great place. We traveled with a 14, 12 and 6 year old. Rome was our final destination after visiting Venice and Florence. Great location (we walked everywhere, except for the Colosseum and the Vatican which were just over a mile away. Everything else (Spanish Steps, Trevi Fountain, Pantheon, etc.) were 10 minutes walks away. Although it is in the middle of everything, it was quiet.
A lot of living space. Great dining area, kitchen and 2 large bedrooms. Wife and I slept in one and the kids in the other. It was perfect. Wonderfully decorated and the stairs up was not bad at all.
Communication was great too. They contacted us before we arrived and checked on us frequently. Exceeded our expectations. Would definitely stay here again if we get the opportunity!