Service is great. Tania responds almost immediately to every inquiry: When I had a problem with the drapery, she sent someone over within the hour to fix it. Also, she allowed me to get into the apartment early and to leave late due to my flight schedules.
The bedding is pristine as are the towels; the beds are very comfortable, the radiator heat is very even and easy to regulate; the lighting is pleasant as well.
Best of all, it's close to everything Zurich has to offer. A quick tram ride and you're on a mountain trail.