The tortillas are worth 4 stars, but I think the rest is overrated. The machaca always struck me as bland. Same with the tamales. I'd much rather go up the street to Ranch Market/Tradiciones.
And the hours are frustrating. Closed Sundays and shuts down too early the rest of the week. The Cactus location is open later, but the food is no better and the dining room is depressing.