This was the best Airbnb experience I've had to date. Apartment is exactly as it appears in pictures - the location is perfectly situated by the metro and local shops and restaurants, in a vibrant area that is very quiet at night. Close the wooden shutters on the windows and you won't hear a thing outside. The kitchen is fully stocked, beds are super comfortable, instructions for everything are written in multiple languages and very easy to understand. Andrea and his wife have thought of every detail, and they have a dishwasher, washing machine (you can dry clothes on the rooftop terrace), hair dryer, fan, iron, and a supply of coffee and tea. The apartment has a/c, but I didn't need it at all, even though it was very warm in Rome during my stay.
Andrea was extremely responsive to all of my messages, usually responding within an hour. He gave a tour of the apartment and amenities, and even some of the local area to show me the metro and shops, etc. He was very attentive and even arranged for a car service to take me back to the airport. Definitely use the car service instead of a taxi to go to the airport. It was less expensive and a much more pleasant experience.
I will stay at Ianus House the next time I am in Rome, and I will recommend it to all of my friends and family. Thank you, Andrea!