Like many other people's experience, I would agree that at first glance Colonia does not have many things to do. However, for me personally, it was a much-needed respite after the hustle and bustle of Buenos Aires and Santiago. My family and I stayed at a quaint hotel for three nights near the city center, and we spent our days walking through the town and basking in the peacefulness and quiet that Colonia offers. 

The town is walkable, although the streets themselves can be a little precarious since they are very old and cobbled so if you have mobility issues take caution! We entertained ourselves by stopping by shops, visiting the paper museum, having high tea, and getting a guided South American bird tour throughout the town!

Although it may not be the most exciting heritage site, I have found that Colonia is always one of the first places I recommend to those who are planning South America trips. It's such a picturesque town, and I hope to be back soon.