The location is about the best you can find for people who are visiting Zuerich as tourists. It is in the middle of the old town - shopping - great restaurants - bars - 12 minutes walk to the Main Railway Station. Very little noise since the living/bedrooms are facing the back of the building.
The place is very clean - but some of the items of furniture are below Airbnb standards and the "squeaky wooden floor" is a problem at night when people walk around and wake up those who sleep.
What is unusual is that the staircase in the house is very cluttered with children's bikes, skis, skateboards, helmets, and boots. Most of it is expensive equipment - which apart from being clutter tells you how secure the building is. In any other city - those items would not be laying around for long.
If that does not bother you - the place is absolutely great.