I've been enjoying Chef Aland and Maria's Latin cooking ever since they were at Market 707. Their cooking is simple and delicious, just like a home cooked meal. Being in their own cafe has let them really expand their Latin fare, including empanadas (which I always have), ceviche and tamales. The arepas with choice filling of queso fresco (fresh cheese), chorizo, and pulled pork (which I had today) are lovingly prepared. Nothing on the menu is more than $10.
The best kept secret might be the Colombian coffee (sourced from a local roaster) and a beef empanada as an afternoon snack, or the homemade alfajores if you want something sweet. You can also buy Colombian groceries there as well.
Be sure to stay and have a nice chat with Aland and Maria - they are both very friendly!