It is impossible to think of Assisi without St. Francis, and St. Francis without Assisi. Both are bounded together. When you walk through the small streets between the walls made of the oldest rocks, and the balconies holding small red flowers, it is very easy to let your mind go back to the early 13th century and see him walking, giving testimony of simplicity.
Simplicity is the exact word to describe Assisi.
It holds its beauty on its the small details that, together, create the most spiritual atmosphere that you can ever imagine. Maybe, that's why St. Francis had a life as special as his hometown is. From my perspective, Assisi is the most beautiful place on earth. I know that you might be thinking that I am overdoing it, but you will change your mind once you are there. If you are looking for nightlife this is not the place to go.