The host is wonderful. She had thought of everything, she even had soap for the washing machine. The apartment is in entrance A on the 2nd floor. The front gate is locked at all times so you need someone to let you in when you first arrive, then the host will give you a key. The apartment is next to tram number 14 and there are a few busses that stop at the same plaza and go to Roma Termini. The metro is far, at least 10 minutes walk. The nearest metro station is Manzoni but it's hard to find at night.