The food is pretty authentic to some parts of Mexico: it can be heavy, laden with rich sauces, and lots of cheese. The rice and beans are great--it's often the simple foods that are the hardest to do well. They offer a choice of either refried beans or black beans, and either are good, but I prefer the whole black beans. I often order the shrimp quesadillas, they're flavorful but not too heavy. The camarones diablo is another good shrimp dish.
Another reviewer mentioned the decor is rather vibrant. I've been to quite a few restaurants in various parts of Mexico that have very similar decor (not tourist restaurants). It's not necessarily my taste, either, but it probably reflects what the owners are familiar with.
The staff are wonderful. Friendly and very welcoming. Some speak Spanish, others don't, but those who do will gladly converse in Spanish.