Pietro's place its great. The location it's amazing. I've got to the main touristic attractions by walking easily and quickly. It's close to the via del corso that holds the principal brand stores. By the corner of the via dell'umilta you can see the monument of Vittorio Emmanuele that it's a great view. Rather close to Roma Termini and Vaticano.
However, I've got problem by getting into the apartment. You have to ring the bell number 12, if im not mistaken, named Silla. Get it clear with Pietro in order to not have to wait on the door. The wifi range it's not too high and keeps disconnecting from time to time.
It's worth booking