Yes this is authentic Mexican food, with authentic (if not kitschy) decor. The mole was very nice with the proper amount and types of spice, and the five taco sampler was exactly as I remember from the Nayarit region. This is also one of the few places I have been able to get a cold Negra Modelo.
Space is very tight in the restaurant as it was too cold for the patio, and so you're almost always in a traffic route. Make sure you get a reservation, and if you can ask for the corner booth or something near the front.
I'll be back to try out the brunch, especially the chilaquiles, also knows as Mexican Kryptonite.