As a Vila owner .... this happens all the time ,, by guests & me.
Just try and remove all broken glass ( it should go to the filter anyway )
Then " Find " another glass .
X glasses at start ... X glasses at finish of stay.
We had 6 knifes go missing one time ....... We found out
that the 8 year old was told to get a " Lunch Pack " ready for their
road trip home to Miami.. so he packed the knives ... a small " check "
payment was sent as compensation .