We were a family of 5 (kids ages 14, 11, 9) for a week in Federico's appartment. The flat is very clean and well organised: chambers (x2) separated from the kitchen/lounge in common. The sofabed (in the lounge area) also share the kitchen. It is ok for a kid sleeping for not really for adults.
Location of the flat of ok. Quite a few restaurants or last-minute-emergency shops around. A supermarket 10 min down the road. Tram station 3 min walk.
Federico was very helpful and reactive for the preparation of our trip. He even organised parking for our car for the week in a nearby safe parking ! Federico was always available and responsive. Perfect man for visitors !