There is no water in the room.
AC-qua — two syllables, stress on the first. 'qu' is always pronounced 'kw' in Italian.
If taps run dry — sometimes caused by maintenance work or a building-wide issue. Report to reception immediately.
'Non c'è acqua' = there is no water. This could be a temporary situation from local maintenance work or a building problem. 'Acqua corrente' (running water) is the full term but 'acqua' alone is understood in context.
I rubinetti non erogano acqua.
The taps are not producing water.
More technical description of the problem
C'è un'interruzione dell'acqua?
Is there a water cut?
Ask if it is a planned interruption rather than a fault
Quando verrà ripristinata l'acqua?
When will the water be restored?
Ask for a timeline so you can plan accordingly
Italian cities, especially in the south and islands, occasionally experience water interruptions ('interruzioni idriche'), particularly in summer when demand peaks. Hotels typically receive advance notice and will have contingency plans — bottled water, access to facilities on other floors, etc.