We stayed as a family with two kids and felt very comfortable. The apartment is very well equipped and we found it very tidy and clean. I have lived in the area for some time so I knew it would be rather lively. We came here in August when Rome is rather empty and the noise level was absolutely acceptable. People who are very sensitive to traffic noise may feel the streetcar from time to time.
We had a great time also thanks to Luca who was very helpful and always replied fast and very friendly! I recommend the apartment as well as the host wholeheartedly.