Alessandra handled my check-in and was very welcoming. During all other times, I was in touch with Arianna and she was a great host. I arrived hours before my check-in and she helped arrange somewhere to keep my luggage until actual check-in. I brought up a random idea of wanting to visit a beach and she gave me a great tip to go to Ostia.
The Airbnb is a great location for the Coliseum and other nearby sights. It's a little far from the Vatican but doable.
My only critique is that it's not a great place for tall people. It's difficult to tell in the photos but if you're 6 feet tall or more, you will bump your head into the suspended glass near the entrance, at the top of the stairs and in the bathroom. I had to crouch down each time I needed to take a shower and using the toilet was tight and difficult. If you're under 6ft, then I completely recommend this Airbnb.