Olga is the ultimate host. She was incredibly accessible, always answered my questions in a timely fashion and even went so far to go to create me a guide for Zurich. I can't say enough positive things about my experience with her. Her flat is amazing! It is in a central location, large and has everything you could need. I would highly recommend staying at Olga's flat when you get the chance to visit beautiful Zurich - you won't be disappointed!