I left something in the room.
la-SCIA-to — three syllables, stress on the second. 'sc' before 'i' makes a 'sh' sound.
Use this immediately after leaving your room or even after leaving the hotel, to report a forgotten item.
'Ho lasciato' is the passato prossimo of 'lasciare' (to leave behind). 'Qualcosa' means 'something'. This is an urgent phrase to use quickly — the sooner you report a forgotten item, the better the chance of recovery.
Ho dimenticato il caricatore in camera.
I forgot the charger in the room.
Phone chargers are the most commonly forgotten item in hotel rooms worldwide
Ho lasciato il passaporto nella cassaforte.
I left my passport in the safe.
A serious situation — act immediately and ask to return to the room
Ho fatto il check-out ma ho dimenticato qualcosa.
I have already checked out but I forgot something.
Call the hotel as soon as you realise, even if you have already left
Italian hotels are legally required to keep found items for at least 90 days. Items found in rooms are typically handed to the reception manager and logged. If you forget something after leaving Italy, calling the hotel is worthwhile — they will often post items internationally.