We stayed during Christmas at Marco's place. The place is as advertised. Newly renovated apartment with nice decor and furniture. Very safe and clean.
We were greeted by Christian at the apartment and he showed us the details on using the elevator and other nice amenities of the apartment.
To get to the apartment you can either take a taxi from the airport for 48 euros or you can take the train to Roma Termini and from there a cab to the apartment for 10 euros.
All the tourist attractions are within walking distance of the apartment. We made a mistake of taking the hop on and off bus.
Royal Cafe near the apartment has nice food
Overall very good experience