Riccardo was waiting for us. A friendly guy, he was helpful and informative. His place is as described and is clean, quiet and comfortable.
The appartment is handy to the historic centre, there are a number of eating places nearby and area felt safe. As we had large bags we felt the easiest way to get there was by taxi from Roma Termini; this was trouble free and only cost 15 Euros.
We are happy to recommend the appartment to others and would love to stay there again some time ourselves!