The bathroom light is not working.
LU-ce — two syllables, stress on the first. 'c' before 'e' is soft, like 'ch'.
Report any non-working lights immediately. In the bathroom, a dark light can be a safety hazard.
'Luce' (light) is feminine. 'Del bagno' = of the bathroom. 'Non funziona' = does not work. This may be a blown bulb that staff can replace immediately, or a more complex electrical issue requiring a technician.
La lampadina è bruciata.
The light bulb has blown.
If you can see a dark bulb, this specific diagnosis speeds up the fix
Non c'è corrente nella camera.
There is no electricity in the room.
If the whole room has lost power — check if the key card needs to be in the slot
L'interruttore non risponde.
The light switch is not responding.
Describe the specific fault to help maintenance
Many Italian hotel rooms use a master key card slot near the door to control all electricity in the room. When you remove the key card, all lights and appliances turn off automatically. If your room has no power, check if the card is properly inserted in the slot first.