Anna and her family were really welcoming. The place is comfortable with your own bathroom. It is near to the metro linea A (8-10 minutes walk) and a bus just near to the building (on the same street) leads you to station San Giovanni in few seconds and Barberini station in few minutes - where you will find the famous Fontana de Trevi :-).
As a conclusion, it was a really good place to visit Roma, most of all with Anna's kind advice. Thanks again, we enjoyed Roma!!