Marco's place is fantastic. A clean comfortable room with a private bathroom located very near Vatican City as well as with good transport links to other parts of town. Marco was flexible about my check-in time and when I arrived I was greeted by his lovely mother who made me feel very welcome! He even let me keep my luggage in the apartment a bit longer than originally planned because I had a late flight.
I would 100% stay at Marco's again and I'd recommend it to a friend too!
Grazie mille, Marco!