The location was excellent - during our stay we used the public transport probably only once as everything was more or less within the walking distance. Ariele was very welcoming and even gave us a ride when we were late to the Vatican museums. The apartment itself is really cozy, though the lack of natural light is a little bit overwhelming and makes you want to spend as much of the day outside as possible. The other thing we observed was a mild odor of mold just right after we came into the place, however I didn't notice it later on. Also if you are really tall, you will either have to crouch a little bit in the bathroom or stick to one of the walls where the ceiling is higher because the apartment is in the attic.