All of the great things the other reviewers described held true. Stefano and his brother were responsive, checked in multiple times to make sure everything was going okay, and had great restaurant and cafe recommendations. Stefano even made us dinner reservations and arranged for a driver to take us from the apartment to the airport on our last day. The check in was seamless and Stefano's brother gave us a fantastic orientation to Rome and where the apartment was located in relation to everything. The location of the apartment was perfect. We walked to all the major sites (Vatican, Colosseum, Spanish Steps, Trevi Fountain) and there are a ton of good cafes and restaurants nearby. We did cab home from a few places, and it was nice to be able to just get dropped off at the pantheon instead of having to give an exact address. It was also nice being so close to the Pantheon because we could go first thing in the morning before the crowds and didn't have to get up super early to do so.
We felt very safe in the apartment and were never concerned about safety. The bed was comfortable and we had no problems sleeping - no noise from outside at all.