The hotel is on the Via Crescenzio, one of the main arterial roads around the Vatican, so if you have your window open it is very noisy at night (particularly at the moment when there are a lot of works going on).
The hotel is okay, the room was a good size, but it is in need of upgrading and improvement; there was only one functional plug in my room which was also very loose (dangerous), and no plug for the bath. In summary, it was okay but not good enough for a four star.