If you book #25hHotel #Langstrasse #zurich for a private event (like Christmas party) ... Bring your own bouncer. Unless you want find uncooperative people from Langstrasse browsing through your stuff and refuse to leave. (And staff wasn't happy when we tried to keep the door closed - due to ventilation - seems a bit of a conceptual problem geschlossene Gesellschaft mit offener Tür)

...

Isn't 9 thirty even a bit early for that kind of trouble?