The arepas at Guasaca are fantastic, there are so many options and flavor combos (all gluten free, + vegan options), and the prices are super reasonable. I tend to get three different arepas, and I can typically eat two... and then I save the third for later :) The sauces are all tasty and the spicy one is the best (IMO)!
I'm GF and every time I'm in the triangle I get Guasaca before my ride back to the coast - my can't miss spot.