Davos is extremely safe for solo female travelers. It is located in one of the safest countries in the world where respect for law and order is ingrained in the society. Incidents of petty crime are relatively low and major crime is very rare. The locals are friendly and helpful, making travelers feel welcomed and safe. Public transportation runs efficiently, reducing the needs for late-night walks. Moreover, support services including local police and health services are very reliable. However, like anywhere, it's always important to remain vigilant and use common sense during travels.