I was incredibly impressed with the Wellenberg Hotel, especially after reading some mixed reviews. Information from the front desk was very helpful and accurate, and the breakfast was great.
The location is great and offers a lot of night life; this does create a little bit of noise outside, but nothing to worry about. It may be considered "loud" by Swiss standards, but as long as you do not need to have the windows open, you should not hear any of the noise. The room was comfortable, clean, spacious, and came with a complimentary plate of fruit, chocolate, tea, coffee, and hot chocolate--certainly a money saver.
I would not hesitate to stay here again on a return trip to Zurich. The hotel staff was friendly and helped to make my trip very enjoyable.