Valle Luna is one of my favorite Mexican restaurants. I wouldn't classify it as authentic, as that typically involves tacos made with fresh corn shells rather than deep fried shells. I would, however, classify it as very tasty, Americanized though the food may be. It will please most palates.
Combination platter #1 is what I typically get. It includes a shredded beef taco or machaca taco, an enchilada (chicken, beef, or cheese), and a tamale (green or red), with rice and beans. They also have excellent spinach and cheese enchiladas. Chips and dips are brought prior to your meal.
Though the flavors are all good, the spicing is gentle. I have asked for their hottest sauces, and even so the food is not very hot. So don't expect heat, but do expect flavor.