Apartment is as described, very comfortable for the three of us. Carmen's husband met us at the apartment and checked us in.
It was a long-ish walk with luggage (25 minutes) from the train station, although we took more than 10 minutes just to walk out of termini.
We used both bedrooms and the sofa bed in the living room. Rome was nice and warm during our stay, but the heating is very welcome.
The area around the apartment was not too fancy, but the main streets were well lit and a short walk from the bus stops.
Carmen made it a point to come meet us and say goodbye before we left, that was a very nice touch.