Firstly, Prati is a very safe neighbourhood. I recommend staying there. The flat is a bit "tired", but everything worked properly. Every time you flush the toilet there's a noise for 1 minute. The flat is situated in the court yard which means it gets barely any day light. It isn't bad when you are planning to walk around the city most of the time. Internet worked perefctly and there's enough space to store your items, clothes and jackets etc. All in all great for max 3 people or couples. Very close to Vatikan City.