Bocas Del Toro is relatively safe. There is very few large crimes here. There may be some incidents, but incidents happen in every town.
The crimes that happen frequently here in Bocas are crimes of petty theft. If you leave your bike out at night, it would probably be gone by morning. Theft happens a lot during holidays when people from outside of town come, thieves scout out the people, and you can get pick pocketed or you could get something stolen if you leave something. If you put your cell phone on the table and leave for the bathroom, it could be gone when you come back.
We hear about an occasional robbery, or an occasional shooting, or an occasional killing. There is very little violent crime here in Bocas. For the most part, I walk and bike almost anywhere, but I do not stay past 10 PM because there is a drug community here, like there is in most towns. They come out late at night, so the streets become more dangerous. Plenty of kids stay out dancing.
Generally, I feel personally safe, but I never leave my doors unlocked. In the fifteen years that we have been here in Bocas, I have never been attacked, but we were robbed once, and that was because we left a window open.