Have you seen my umbrella?
om-BREL-lo — three syllables, stress on the second. Double 'l' is slightly longer.
A simple way to ask about a lost item. Works for any small object — replace 'ombrello' with whatever you are looking for.
'Ha visto' is the passato prossimo of 'vedere' (to see). Using 'ha' (formal Lei form) is appropriate when asking hotel staff. 'Il mio' (my) is the possessive adjective agreeing with the masculine noun 'ombrello'.
Ha visto la mia giacca?
Have you seen my jacket?
Use 'la mia' for feminine nouns — 'giacca' is feminine
Ho perso il telefono. Qualcuno l'ha trovato?
I lost my phone. Has anyone found it?
Urgently ask about a lost phone — staff can call the number to locate it
Credo di aver lasciato le chiavi di casa in camera.
I think I left my house keys in the room.
House keys are a serious loss — report immediately
Items handed in to Italian hotel receptions are usually logged in a 'registro oggetti rinvenuti' (found items register). The hotel stores them for up to 90 days. High-value items like wallets and phones are kept locked and handed only to the proven owner.