Willemstad is generally a safe destination for solo female travelers. The residents here are friendly and the city is known for its low crime rate. However, like any other city, it has its own share of petty crimes such as pick-pocketing. Therefore, it's always important to stay vigilant especially in crowded places and during nights. It's suggested to use reputable taxi services, especially if you’re traveling late at night. It's also recommended that solo travelers maintain a low profile and avoid isolated areas. Nonetheless, thousands of solo travelers visit each year without any issues.