I only interacted with Chris' sister while staying. They live upstairs and the rooms are downstairs on the main floor. There are two rooms and a bathroom that you share with the other room. It's nice and private. There is not a key to lock the bedroom door while you are out, but I did not have any problems with leaving my things there during the day. The room was large and clean with good amenities. The house is within walking distance to all of the stores and the Christmas Markets. It's a 30 min walk to the Zurich HB station and only a 10 minute walk to another big hub for trains and the tram. The only complain would be the shower in the bathroom and the bathroom floors were not super clean. Clean enough to use, but not thorough. Some mold and stains in the shower. The bedroom was recently cleaned and was fine. Overall a good stay in a good location and the host was very kind and helpful - met me outside the house so I knew which one it was and gave me tips and advice on how to get around and local things to do. I would stay here again.