There are two main rules to follow for tourists who want to stay out of trouble.
Firstly, avoid walking in the northern zone, where the slums are located. This area lacks tourist attractions, but it has an exceptionally high crime rate. If you have a genuine interest in experiencing this neighborhood, it's safer to purchase a ticket for a guided excursion.
Secondly, for female visitors, it's important to remember never to sunbathe topless on the beach. Such behavior is considered highly indecent and inappropriate. Engaging in topless sunbathing may result in being taken to the nearest police station. If you prefer not to wear a swimsuit top, you can legally sunbathe by covering your chest with stickers before heading to the beach.