Great host! Helpful and responsive. Clean, nice housing unit.
Make sure you have a SIM card *before* arriving to the apartment building - you need to call/WhatsApp Riccardo to get inside. (You can also wait at the door and eventually someone will come in or out).
The Airbnb itself: Comfy bed, basic unit with good heating, Wifi, etc. and an espresso machine for all guests. Shower had plenty of hot water. 10-15 minute walk from Termini - excellent if you need a middle-of-the-night bus to or from the airport like we did.
Park across the street is great, Gatsby and other businesses on the Piazza are wonderful, not a far walk from Colosseum, the Monti neighborhood and more.