Nuna & Co. is a cozy bakery originally in Olivos, Argentina. This downtown location is more easily accessible for most tourists.
I consider myself a medialuna expert with a refined pallete for the gooey treat. I have eaten my fair share and Nuna & Co. make one of the best medialunas in town. They offer a variety of flavors like nutella filled, cinnamon, and even a special raspberry-glazed version.
You can't dine in, so pick up a few to go and enjoy your treat either at home or on a bench in nearby Plaza San Martin.