The safe will not open.
cas-sa-FOR-te — four syllables, stress on the third.
If you have locked something important in the safe and cannot open it. Stay calm — hotel staff have a master override.
'Non si apre' uses the reflexive construction for 'does not open'. This is the same pattern as 'non si chiude', 'non si accende'. For safes, the problem is usually a forgotten code or a dead battery in the electronic lock.
Ho dimenticato il codice della cassaforte.
I have forgotten the safe code.
Staff have a master override — go to reception immediately
La cassaforte sembra scarica.
The safe battery seems flat.
Electronic safes have battery-powered locks that can die
Il mio passaporto è nella cassaforte bloccata.
My passport is in the locked safe.
An urgent situation — staff will prioritise this
Hotel in-room safes use a master override code known only to management. This is for emergencies exactly like this one. Hotel staff are trained to verify your identity before opening the safe with the master code — they may ask to see your room key as confirmation.