Lahnstein generally has a very low crime rate, especially when it comes to violent crimes. As a solo female traveler, you can travel the city with relative ease. However, like anywhere else in the world, it's always important to stay vigilant about your surroundings, particularly at night or when in less crowded areas. Still, the city is well-lit, people are generally friendly and respectful towards women, and it's a safe place to travel overall. Keep your belongings secure and avoid isolated regions to enjoy a worry-free trip.