Tena is generally a safe location for solo female travelers. The locals are friendly and crime against tourists is relatively low. Yet, as with any travel location, it is crucial to take standard precautions such as avoiding late-night strolls alone, not flaunting valuable items, and staying in well-populated areas. The possibility of petty theft should not be discounted and it is always advisable to keep an eye on your belongings. Public transportation and taxis are generally reliable and safe. Nevertheless, bearing in mind that things can happen, maintaining vigilance ensures traveler's safety.