Puntarenas is generally considered safe for solo female travelers. The locals are friendly and helpful, and there's a strong police presence in tourist areas. However, like any other place, it's crucial to maintain personal safety precautions. Avoid desolated areas, especially at night, and keep your belongings secure. Petty theft can be a concern but is preventable with vigilance. Overall, it is conducive for a safe and enjoyable trip if you take necessary precautions.