Stefafania's place is really like the several pictures she posted. It's really charming and well suited and equipped for 6 people.
Moreover it's 20min away from the exposition by underground which is only 3m from the flat.
Stefania is really nice and helpful (our plane was 2h30 late and she waited for us), she also gave us the "belissima" place to catch sight of.
Therefore I really recommend this place.