It was ok for 1 or 2 nights, but I would not recommend to stay longer.
1.) The building is quite old and has not been updated. Hence, taking a shower, means turning 3 different knobs in different directions and waiting until the temperature adjusts.
2.) The toilet is in the hallway of the building. Meaning that you need to exit the flat to go there and from what I recall there is no sink. Hence, you go back into the flat and bathroom to wash your hands.
3.) The location is quite questionable. I understand that it is Langstraße, but in the evening (around 9?) I was greeted by drug dealers. So it is fine, but if you have an alternative, I would prefer it.
4.) I find the prices for washing/drying and luggage storage quite high and feels more like a highly profit oriented business without delivering the living standard of a hotel. Of course I understand that the price point is completely different, but having been to various AirBnBs in Zurich, I would stay that this has had the worst price/ value ratio.