Just coming back from a 3 days journey and I can tell you this is definitely the best place to stay in Rome !!! You could not find any better ! Alessandra is the most charming and helpful host you can possibly meet. Since it was my first time on AirB&B, I had exchanged a lot with her before and after finalizing the booking, and yet she answered every single question I had very quickly and still with great sympathy. She proposed help to book a private driver to take us from the airport to her place, and everything was perfect. Unless you decide to take the public transportation, the best is to book a private driver as it is same price as a taxi for that ride, but a lot nicer (50€ vs 48€ with a taxi!).
The appartement is located in the Vatican area, within 15mn walking distance from the San Peter Piazza, and 10 minutes from the San Peter Stazionne. The building is neat and quiet, and there is an Italian market just in front of it, opened every day except on sunday, where you can buy fruits and vegetables.
The entire appartement is very clean and wonderfully furnished, with fancy decoration and everything you can possibly need. there is a complete kitchen, 2 really big bedrooms, and a nice living room with 2 couches and a small balcony where you can easily stand to have a drink.
On the next morning from our arrival, we had an issue with the hot water in the bathroom. We called Alessandra and she came very quickly to take care of it even if finally the hot water went back when she cames in !
We really spent 3 amazing days in this wonderful city that Rome is, and Alessandra's appartement made it even better.