That robbery story was quite a tale and that old retired Marine was a real hero. But, I believe it happened in Lima, Peru which is not the same place as Limon, Costa Rica. As to Limon, its a pretty dumpy town but we never had any safety concerns. In fact, my wife and I had no problem having a driver take us over an hour from Limon to a jungle resort called Almonds and Corals where we did some ziplining. Probably the only safety concern we had was slipping on a banana peel (they grow lots of bananas in this region).