Before writing about the place, we have to mention that Andrea was a GREAT host. Was very flexible with our check-in despite a flight that was delayed for hours and arriving late at night. He then met us at the apartment, helped with our luggage and gave us: great food recommendations, detailed instructions about the apartment and a detailed list of all the tourist attractions that are worth seeing outside of the usual ones. You would not get better service even from the best hotels.
The apartment itself was also great. Plenty of space. Fully decked out with all the essentials. The loft bed was comfortable. It was private and very secure as well.
The place was walking distance to the suburb of Monti, which has great eateries for all meals of the day. Also walking distance to most sites (20-30 mins), bearing in mind this is not a long walk because Rome's public transport is not as advance as other cities and would take this long to get you places as well. That said, the place is also close to public transport access.
Handy tip if you intend to see the Vatican - don't book anytime on a Monday or on a Wednesday afternoon (the busiest times for tourists).
No hesitation in recommending this listing (for Andrea's helpful service alone), but we would definitely stay here again when we come to Rome.