Serena and her mother Fernanda are the hosts, but you will mostly interact with Fernanda. I gave everything 5-stars except 4 for communication. Fernanda knows limited English but enough to communicate everything you might need in regards to the premises. She will also respond pretty quickly on the Airbnb app.
The location is two blocks away from the metro, and within a 20 minute walk from the colosseum. We walked a lot and didn't mind, but the location is very convenient.
The apartment was good, clean, and felt like a nice place to return to after a long day. There are 3 bedrooms and 2 bathrooms. At some point you will probably spend your time with other people at the Airbnb, but we knew this going into our trip and it didn't bother us.
Overall we had a positive experience!