Cassandra's apartment was just as advertised - clean, great location, and perfect for 1-2 people staying in Roma. From the train station, the bus is super easy to hop on and take almost directly to the front door. The same is true when traveling from the apartment to other locations in Rome. It is walking distance to everything you'd want to do - Trastevere, Trevi, the Vatican, etc.
Difficult to see from the AirBnB page, but this is a single apartment in a small 'hotel' area of the building. You have your own keys / locked door, but you do share an entrance and exit with several other apartments.