Roberta's house is beautiful and very well located. We were a group of 5, we were very comfortable. Though surrounded by windows and by a road, bars and restaurants, the house is very silent, we couldn't hear any noise from the street. The house has everything you need to cook, we always cooked breakfast and dinner and didn't miss anything. Subway is a 10min walk but you can walk to Vatican city, no problem. There are plenty os buses very close by that will take you everywhere. We are very happy with our staying.