The location is perfect - room was as expected; a small but comfy bed with a clean bathroom; perfect for the solo traveler who's keen to do the tourist stuff and have a great landing point. Sadly, I did not spend much time in the apartment or with Roco and Maria, but they were very nice pleasant, texted me answers to all my questions (airport / train advice). They offered coffee and breakfast which is great.
It's a quiet neighborhood with one of the best resto's near it. The "night life" is quick train ride, or short taxi ride - or about a 20 minute walk.
It's right near the Vatican area and is less than 5 mins from the train station which puts you near everything.
A great stay overall - would suggest it highly.