I had a great time at Ernesto's place. It is in a great area of Rome. There are so many bars and restaurants but it is quiet as well. I only took public transport a couple of times to things further out of the city, for the rest you can walk. Even to Vatican City.
The property is in a lovely building, was clean and had a well supplied kitchen. The beds in the dorm were comfortable and the WiFi is really fast. I highly recommend this for your stay in Rome