Not to sound incredibly American, but Costanza is AWESOME. She was incredibly communicative throughout my entire stay and made sure I had resources to find anything I could need as well as visit all of the places I was interested in during my time in Roma.
Everything was very clean, very well-organized, and I felt very welcomed by the little biscuits, flowers, and juice she had ready for me. Not only that, but I was even given back-up WiFi in the case of the primary WiFi signal going weak (which it did for a little bit at some point in the night). I was thoroughly charmed by this Airbnb. Great location with an even better host. Grazie Costanza!