We stayed at Hyesook's place last month. It was our first time in Zurich and Hyesook and her daughter were extremely prompt with responses . The apartment itself is very ideally located within walking distance of the main station. Aldi and Coop are literally on your doorstep if you need to shop. The apartment was a good size, sparkling clean, with all you'd need in the kitchen. There is a washing machine and dishwasher. The only slight issue I had was with the pillows as they were too soft and uncomfortable but this depends solely on personal preferences.