Our stay was very brief (less than 24 hours due to a cancelled flight), but it was exceptional.
Our hosts met us in person at the apartment (but offered to meet us at the train station and walk with us to the location - which is incredibly gracious). I feel it's also important to add that we were much more late checking in than anticipated due to our cancelled flight. She showed us everything we needed to know, let us know about treats they had bought for us as guests, and sat down with us for a wonderful conversation that lasted 20-30 minutes. She really made my father, who had never been out of the US, feel extremely welcome. Out of our entire tour of Europe, this location and service was the one he still talks about post-trip.
I highly recommend the space. It is beautifully laid out, the bedrooms are large, and the rooftop view is breathtaking. It is a 10 minute walk from the train station and a 5 minute walk to the metro station. I will definitely stay with our hosts again when I return to Rome.