As others have said, this one's a gem. Two couples, or in our case, a couple and a solo friend can stay comfortably in one of the more happening neighborhoods in Rome. We are not young travelers but we are fit, and we walked to the Vatican, the Colosseum, and all the central attractions of Rome from the apartment without using mass transit or taxis/Ubers. Having two fully equipped and very nice bathrooms really helps when you're getting ready to blast around the city at the same time and the beds are comfortable, the apartment is quiet, despite being among numerous restaurants and bars.
Beyond that, the hosts were great on communications and were super helpful when we had a late check-in because we'd been held up in the COVID testing line at the airport.