Casoria is generally safe for solo female travellers. Like any other city, there are areas where it's more secure and areas that might be less safe during late hours. However, violent crime rates are quite low. Receive a potential drawback might be lacking English spoken by locals, but local people are generally friendly and willing to help. It is always recommended to stay vigilant and take common travel safety precautions like staying in well-lit areas at night, not displaying flashy valuables, and make sure to inform someone about your daily travel itinerary.