My stay at Stefano and Valerio's apartment was simply fantastic. As their description implies they have an extensive history of being hoteliers for 5 star establishments, and that experience definitely translated into my stay.
They helped me arrange transport to and from the airport, the apartment itself is immaculate and well stocked with various toiletries and cookware, the location is simply EXCELLENT within my first full day of Rome I walked everywhere with relative ease, and the apartment is also extremely well insulated from street noise: there's a restaurant directly below the unit and I heard not one bit of sound from the patrons below. Most importantly Stefano and Valerio were extremely responsive and helped me find my bearings in the city.
The only negative part about my stay was that I couldn't stay longer! This is absolutely the place to say if you're looking to stay in Rome.