Our stay at Au's was terrific. The flat is bright and sunny, comfortable, spacious, and tastefully decorated - neutral and straightforward. It is complete with everything you may need.
The location is superb! It is near the central train station. It is a new and upcoming area of the city, and it is accessible to many parts of the town from Limmatplatz by Tram or a walking bridge over the central train station.
Au is excellent - very responsive, prompt, and helpful.