Cristina is very helpful and friendly. She cares about her guests. She picked up us from a airport late evening which was very helpful.
The room is close to ancient Rome, 10 minutes of walk to Colosseum and close to metro station. Downstairs is very good restaurant / pizzeria crowded by local residents. Depending on your preferences there are also some cons. The room has window to a very noise street. You can hear people and cars all night long. Big dog is friendly but stinky. The apartment is in bad condition e.g. no doorknob to the bathroom and with too much people sometimes you have to wait long to bathroom. I recommend Cristina as a host however the room and the house may not be as you expected by reading other opinions.