I spent four days at Riccardo's place in 2016, and came back for 21 days in 2017, which should tell you something. It's a large, very comfortable apartment with all the facilities you could wish for, and in quick walking distance of the Colosseum, Forum, San Giovanni in Laterano, and both Metro lines. Although it's in an area frequented by tourists, it's just far enough from the main sites to give you the opportunity to live more like an everyday Roman if you prefer that (which I do). Riccardo is a wonderful host, who thinks of everything, and is always ready to offer suggestions or advice (including, in my case, helping me find a local doctor when I needed some assistance). An excellent place to stay.