We stayed 3 nights with our family (my mother, wife and 2 year old daughter) and we really enjoyed our stay. The location was perfect for us, easy walk to the Vatican, historic center, and down to Trastevere too. I wish we went up the hill behind the apartment sooner, it was a great view from Gianicolo Park. Buses made getting to other sites simple enough. We walked back from areas like the Trevi fountain and Spanish steps but felt good after plenty of pasta and gelato.
Nicola let us check in early and check out late which we appreciated - helps we were traveling off season I’m sure- and was present for our arrival and departure. She also arranged for a taxi for our way in and out.
The apartment was colorful as you see in the photos, useful basic kitchen, and pretty quiet. The apt is on an alley essentially- which helped keep quiet but also made tricky for our van-taxi to access on arrival. WiFi access was spotty I think due to old thick walls, which I found the case in much of rome overall (i.e. weak data and WiFi connectivity vs other towns/cities).
I recommend the apartment as a clean, quiet spot that is walking distance to plenty of good sites, and a helpful host.