Authentic it is not. The chips tasted like they came out of a bag, and were more like Doritos than tortilla chips. The salsa was good, but I was expecting more than the two leafs of cilantro. I ordered the Choripollo - two chicken breasts covered with chorizo. Not exactly something I would find in a real Mexican restaurant, but it was quite tasty, even though a tad over salted. The packaged tortillas were rubbery, as are all packaged tortillas. An authentic Mexican restaurant makes its own tortillas.
The service was bad. The server was inattentive, and left us for more than 30 minutes while we decided on dessert. After waiting 30 minutes, the want for dessert waned, like the after dinner drinks we were going to order. We finally had to go to the bar and ask for our ticket.
If you are looking for an authentic Mexican restaurant, don't get your hopes up. If you've never had authentic Mexican food, you'll be fine.