If I was stranded for days without food, the first thing I'd eat would be a taco. Actually, several tacos. With sour cream. And guac. And the doctors would probably say "No...we think you should just have an IV..." and I'd say, "Mind your own business!" (or something much ruder).
All this is to say that I really love tacos, and I'm always looking for Mexican food places to indulge my cravings.
La Mexicana is right across the street from the Reference Library, which is dangerous because after a day of working there, where they don't let you bring food, I'm usually starving when I leave.
This place doesn't look like much from the outside, but the tacos are really good and not a bad price. It's clean, cozy and the staff is great. It's no gourmet, but what tacos are?