I spent four nights at Bettina's apartment, and could not have been happier with it. The location is ideal, steps from the Duomo with an amazing view from the balcony, but facing a courtyard so it is quiet and peaceful. I walked to all the sights from the apartment as well as the train station. As others have mentioned, the water heater in the bathroom is somewhat small, but it was absolutely sufficient for a quick shower and I have no complaints about it. Bettina was a wonderful host, typically responding in less than ten minutes to questions. I had a problem with one of the keys (entirely my fault), and she was incredibly gracious and provided me with a new one in under 1 hour. She also gave me great recommendations for dining and gelato. I absolutely recommend her apartment to other travelers.