Marco's apartment is wonderfully located, in a highly charming neighborhood, close to a lot of restaurants, stores and bars and it's easy to visit Rome ancient city by foot From there. We even went to the Vatican walking. We Were traveling by car and even if the streets around are very small and quite Messy we easily found a place to park the car two minutes away from the apartment.
The apartment is in perfect condition, with air conditioning, Washing machine, good shower etc. It was very clean and welcoming, perfect for one or two couples.
The only drawback would be the noise on fridays and saturdays nights that was quite loud in the living-room where there is the sofá bed. We manage to sleep anyway, but it is a point to take into account for those who have a light sleep..
Other than that, I highly recomend the place!!