Excellent and very comfortable apartment literally minutes from the Roman Forum and Collesium. We were a family of four, our 21 year old daughter and 24 year old son travelled with us for a family birthday. Two well equipped and spacious bathrooms, a small but well equipped kitchen and a comfortable and spacious sitting room that had a double sofa bed, a very comfortable bed according to my daughter. My son had the single on the mezzanine and found that comfortable, we had the main master bed which again was great. Marco was an excellent host, he was at the apartment on arrival and booked the two taxis we needed to return to our different airports. He also provided a bottle of Prosecco for my daughters birthday which was very sweet. We would book again and go back in an instant. The pictures on Air B&B are accurate, in fact they don't quite convey the charm of this super little apartment.
This apartment does have a steep staircase, so might not suit the elderly or infirm but we had no issues. There is no outdoor space so anyone wanting a terrace or balcony should be aware of that. Marco has a detailed book of local restaurants and bars that he recommends - we went to two of them and they were exactly as he said, simple local restaurants where the food was very good and reasonable prices. He also has other recommendations for other parts of the city, however we tended to head back on an evening and stayed in the area around the apartment.
We had an excellent stay and would highly recommend the apartment to others.