I stayed there recently after a night on the town. Staff was extremely friendly and helpful.
The room I stayed in seemed a little old fashioned and I was surprised to see, that they still use real keys.
The whole place seemed very clean and there were nice little details in terms of customer satisfaction (i.e. free apples in front of the elevator, a little bag with assorted chocolates upon departure etc.). The hotel is located centrally and I would certainly recommend it to anyone traveling to Zurich.