My experience with this apartment was good in every respect. It is very modern, clean and efficient, and, best of all, has a fantastic location. It is a five minute walk to St. Peter's in one direction, and a short walk to most everything in the historic center of Rome. The neighborhood itself is ideal for shopping, being only a couple of blocks from Via Cola di Rienzo.
The apartment is in the back of a building on a very quiet street. It has plenty of light and air, and it gets far less street noise than something on the front of a building would get. Valerio was a great host, easy to communicate with, and very helpful and pleasant. He has fitted out the apartment in a nice way, with pretty much everything one needs for simple cooking, etc.
I highly recommend this apartment for a great stay in Rome.