Travel Advisory?

For what it is worth, my strategy is to walk most everywhere and follow the families with children. That is why Zihua is so compelling as you can easily walk the entire city and there are tons of families out and about. I also feel safe on the combis as this is the main form of transportation for the locals. An added benefit comes from the culture in Zihua regarding combis. When someone boards a combi, they greet their fellow passengers and the passengers respond. This gives you an opportunity to practice Spanish as you can strike up a conversation by saying how much you love their beautiful city. As a rule, I don't trust taxistas.

As others have mentioned, if you go looking for trouble, you will find it.