Definitely not authentic, but nonetheless the food is awesome. I've been here twice over the past two weeks and I'm a huge fan. First, the drinks are great. Margaritas: I've had the traditional and strawberry and both are excellent. They also have a good variety of beer on tap.
Portions here are pretty big so come hungry. The carnitas and roasted chicken are juicy and come with great sides. Good salsa and guacamole as well.
And I've found the service to be great on both occasions I've visited the restaurant. Prompt attention but not so much that it becomes hovering. Plus the place has a beautiful bar area that's great for a relaxed dinner.