Absolutely charming place. The apartment has much more space and looks better than the photos on the website would lead you to believe. Cannot ask for a better location, it is literally 50 m from the Trevi fountain (but there are 4 gelato shops on the way, so it may take a while :), and the apartment is facing the inside courtyard of the building so it is very quiet. It is a modern and comfortable place, and exceptionally clean. Everything you'd want to see in central Rome is within a 30 minutes walk from there.
Vincenzo is a great host, very responsive and helpful with directions and suggestions for places to go and things to do, and particularly flexible with check in/out hours, which was very much appreciated. Thank you, Vincenzo!
Very highly recommended.