Very nice flat, although is a shared flat there's all the privacy one needs.
In 10 minutes you can reach Flaminio by tram, where you can take the metro. The host always answered me in 10-20 minutes. "Villaggio olimpico" (where the flat is located) is a really peaceful place.
If you're going you also have to check out "pizza rustica" in Flaminio (take away roman pizza).