The apartment is a 3 minute walk from the main street in Trastevere and right beside a tram stop. It's close to the train station and is connected directly by tram from there. It's very handy and is a nice apartment. There is most definitely a washing machine in the little yard, I don't know how the previous reviewer missed this. The wifi was also working completely fine. The main area of the apt is rather dark though which is the only downside.
It's a great place to stay in Rome, close to everything and you feel like a local staying slightly off the beaten path.
Would recommend.