Sergio is very kind, he worried that we may can't find the apartment, so he picked us up at the bus station( Plaza Roma). When we stay, the heater got problem and didn't work, Sergio came to the apartment and fixed it. About the location, it's nearby the water bus station (Accademia) and easy to go everywhere.
Although Sergio is not very good at English communication, we still want to recommend him and his apartment to everyone.