Castiglione della Pescaia is considered an expensive and prestigious resort, where people come to enjoy Italian cuisine, the cleanest sandy beaches, the old town and centuries-old pinewood. That's why the "bandito gangsterito" here is not "robbed un momento", but rather "relaxing, drinking cinzano and constantly sati-drunk" with other tourists. People here are very open and friendly, many know English, the streets are clean and beautiful, so you do not have to worry about your safety on vacation here. However, in areas with large crowds of people engaged pickpockets.
Security in Castiglione della Pescaia is guarded by the municipal police. On the beaches the coast guard and lifeguards patrol the sea. Tourists are advised to avoid the illegal street vendors that sometimes appear at the entrance of various cultural monuments.
So our advice is not to swim too far and be careful during storms. But otherwise - have a great time!