Renting a villa in Europe can be a wonderful experience, but it is advisable to take some precautions to avoid robbery - I recently stayed with a large group at a beautiful villa near Florence, in Tuscany, and, while we were asleep, thieves broke into the house and robbed us, so I learned this the hard way.
Recommendations when renting a villa:
(A) Before booking a villa, research and ask the owner about previous robberies in the property, so you know your risks.
(B) Even if a place seems safe, always take precautions to avoid a robbery (e.g. turn on the alarm system, lock bedrooms from the inside, etc). Ask the owner what else you can do to be safe.
(C) Avoid if possible bringing lots of cash, expensive items or things with sentimental value that will make you upset if stolen.
(D) if you are robbed and want to get a police report, go to station yourself to get it, even if the owner says he or she will get it for you (the owner may "change his or her mind")
(E) Don't count on Airbnb to help you - they did not help us at all