Helen is a great host! She answers very quickly to the messages and is very helpful. I came earlier than I expected and she was happy to take me in. Helen gave great advises on which places to visit (if one doesn't want to stay in Rome) and where to go for great dinner (there is a great area just over the street with loads of hip places for drinks and food). Apartment is located just outside the tram station, which makes the connections to all tourist places extremely easy. I can definitely recommend Helen's apartment!