We stayed at Laura's place for 4 nights, a family of four, and had a wonderful time. the apartment is very large for an urban apartment, it's at the heart of Rome, perfect for walking around. The beds were comfortable, bathroom excellent, and the apartment design is stylish and beautiful. About the noise: the street below is very noisy with several restaurants and live music, with open windows the noise is very noticeable, with close windows the noise is not noticeable at all in the bedrooms, and is slightly noticeable in the kitchen and living room. It's not a problem if you are used to urban apartments. In the kids room, one bed is a folding bed, was not a problem for our 12 years old son.
Overall - highly recommended for families that want to explore the city until late hours.