Seminyak is generally safe for solo female travelers. Although it is a tourist hub, which reduces the risks of serious crimes, it's important to be wary of petty crimes such as pickpocketing and scams. Most locals are friendly and respectful towards visitors. Nevertheless, it's essential to remain alert, especially at night, in crowded places, and when using public transportation. As in any foreign destination, always trust your instincts and avoid situations that make you feel uncomfortable.