The apartment is located at roughly 20 min walking from the Termini station.
We did not get the chance to see Sylvia but Gerardo, Sylvia's friend who is very cool and flexible.
We asked for a single bed for the bedroom but due to some issues we get another bedroom with two beds but a private bathroom instead.
Others people are living into the place, the roommates are very sociable.
To sum up we strongly recommend this place if you want to experience an Italian way of life.