Simply the best Mexican food around. It's casual, lots of big clean windows, and the interior is very clean. Some outdoor seating, but nothing fancy. Looks like an old-style diner, but a little bigger. Usually adequate parking. Their selection of salsas is quite good, a serve-yourself bar of salsas. I'm not wild about their chips (a little too thick and hard), but their chille relleno is off-scale good. Wonderful burritos. Very pleasant staff, and the clientele behaves nicely -- who wouldn't with that food!
Puerto Vallarta is your basic mexican restaurant. As with most mexican restaurants this is not gourmet cuisine, but generous portions of all the basic standards that are consistent and filling. The top shelf margaritas are superb, but by the pitcher will run you twice the price of a meal for two, and yet they are still worth it. Great chile verde with all the classic sides, super soups, and fabulous fajitas. Can get boisterous and noisy when busy, but then that is the way it should be.
I moved from San Diego so I have been very spoiled as far as Mexican food goes. The food here is good but not fantastic. It is a family run very pleasant place. The service is excellent. I haven't found any mexican food in Santa Rosa that I love but I have been here several times just because the food isn't bad and the service is wonderful.