I've had a great stay at pop-up hotel Krone! The location is unbeatable and the price is good aswell for Zürich. The staff is really nice and is there for you if you have any questions. The room is small but more than enough if you came to explore the city. Quite loud (not in the hotel but outside) on the weekends due to bars near by but this is something you can live with when you think about it's location. I would definitely book a room here again!