Loved staying at Nina's apartment! While I did not get to meet Nina in person, her friend met me to give me the keys when I arrived in Rome. He was incredibly friendly and helpful, and met us at the apartment when we arrived at 12:30 am. The apartment itself was nice, just like the description in the listing. One full/queen sized bed, a nice open closet area with hangers, all necessary linens, a full bathroom with a standing shower, and an electric kettle to make coffee or tea in the morning. Getting to the city center from the apartment was very easy and only takes about 30 minutes depending on when you leave to catch the bus. You can take the 409 to Arco di Travertino, and get on the metro line from there. Your metro pass will cover the cost of the bus as well, but we found that no one seemed to actually validate their metro cards on the bus. So if you are in a bind, just hop on the bus and don't worry about not having your ticket. I would definitely recommend staying here if you are in Rome!