I highly recommend Stefano's B&B! It was my best airbnb experience thus far. His place is beautiful and very clean. It is close to the center of Rome and the nearest train station is about 6 mins away. And, it is possible to walk to vatican city. I would warn future visitors to have access to wifi on their phones or know the exact directions to get to their destination. The streets are confusing because sometimes there aren't street signs and there are many dead ends. Stefano is very nice and is a great host. I would book his place again.