Come for a quick bite with low'ish expectations and you'll leave satisfied. Because even a bad arepa is good. The fillings leave a lot to be desired (most of the veggies/beans appear to be straight out of the can), but the guys stuffing your arepas are really generous with the quantities.
Sometimes I get the roast pork and the ham and add cheese and garlic sauce and pretend it's a cuban sandwich, which it definitely isn't, but you know what? Who cares.
tip: ask for plantains in your arepa.