Stefano and Raffaella's apartment is a wonderful home base for exploring Rome. It is in a very central location within about 20 minutes walking distance to the Vatican and less to the Colosseum. The apartment itself is very clean and laid out well. It was also very nice having an elevator in the building. The AC and Heating worked very well, and although the apartment is very quiet, the unit did a great job at blocking the Roman Police sirens. The only negative I can think of is that you cannot use the washer/dryer if you are not in the apartment. It's helpful to know for check in that the entrance to the apartment building directly faces the Largo Argentina ruins.
Stefano and Raffaella were the most responsive AirBnB hosts I have ever experienced. They organized a private taxi for us from the airport, and changed the pick up time when we missed our connecting flight to Rome. Stefano also made reservations for us for dinner. I cannot recommend this place enough.