What's the use to have a cellphone if you don't have it with you ?
People who choose the cheapest week of the year don't bring jewels, or if they do they have them on.
Passports ? Ask the police, they're very difficult to modify, nobody is interested by them in Europe.
PDL doesnt strike me as a place to steal jewellery from tourists as its just for me a little town popular for families. Not Monaco or Nice....
I note one of the residents neary got burgled was the other burglary done to a RESIDENT?
Lets be honest when you go on holiday, you usually put your passport in a safe (actually a lot of places now take them OFF YOU). The normal thing is to take as minimal stuff as you can.
MOST people now take a small digital camera or use their mobile phones for taking photos and MOST people carry their phones and cameras with them even at night for that PHOTO.
I do know people who take tablets on holiday now, even as far away as Bangkok and not one robbery.
IF you do take these things on holiday you usually LOCK them up either in a safe or in you suitcase, or you carry them.....and then you secure the room.