We really loved our stay here. The location was absolutely perfect for us, as it took less than five minutes to walk to St. Peter's. There is also a metro stop right next to the apartment, but we were glad to have taken her advice to skip the metro and just walk everywhere from the apartment.
The apartment has one main bedroom with a large (double?) bed, and then another room with a twin bed on the main floor. Upstairs has another large bed, so this was perfect for two couples. We could have had one more person with us and still been comfortable.
We would definitely recommend this apartment.