We enjoyed the location in the heart of Old Town Zurich. The apartment was tiny, but met our needs. The only draw back was the apartment was a little stuffy in the heat and the fan and open windows only helped a little. Also there is a bar across the street that is noisy until late in the night, and we were not able to shut the windows due to the heat.
The location is excellent, though. Very close to the train station and lots of restaurants nearby. The old town is quite charming.