I found a backpack in the dormitory.
ZAI-no — two syllables, stress on the first. 'ai' is a diphthong.
Report found items to reception. Never take items that do not belong to you from a hostel dormitory.
'Ho trovato' = I found (passato prossimo of 'trovare'). 'Uno zaino' = a backpack. 'Nel dormitorio' = in the dormitory. Reporting found items is the right thing to do — the owner may be searching desperately. Italian hostels keep found items for 30–90 days.
Ho perso il mio zaino nel dormitorio.
I lost my backpack in the dormitory.
Report a lost item from the guest perspective
Qualcuno ha trovato una giacca rossa?
Has anyone found a red jacket?
Describe the lost item in detail to help identification
Dove è l'ufficio oggetti smarriti?
Where is the lost property office?
Ask at reception — they handle all found items
Petty theft in hostel dormitories exists everywhere, but Italian hostels are generally safe. The most common incidents involve unattended items in common areas rather than dormitories. Always use your locker for valuables and never leave laptops or cameras visible on your bed.