The room is amazingly located in the most central part of the city. As described is small and only serves to sleeping purposes, but for a short stay in Zurich it couldn't be better.
It's also important to highlight that from 5om onwards there'll be people around as it has a bar below. This means that you might bump into some customer going to the toilet, and if you're a light sleeper (or are not too tired after wondering around the city) the noise might not let you sleep.
For us we literally fainted in bed so there was no problem with that!