Ruggero's apartment is very well located, Castel Sant Angelo, the Vatican Museum and Piazza del Popolo are all within walking distance. There are some bus stops nearby as well. The building and the area are nice and quiet, there are shops and restaurants in the neighbourhood.
Ruggero is a really helpful host, he communicated well and answered quickly. The instructions to get to the house were clear and he was flexible on our arrival.
The flat is very cold in winter, I can imagine that it is a blessing in the summertime, however, there is air conditioning for heating that works fine. We had some issues with the cleanliness.