I'm a bit mixed about the ratings I'm giving. This is a solid place that's quite good. Unfortunately, I also spent 3 years down in San Jose where we had our pick of a lot of Mexican food, much of it authentic. Now, I'll admit I was not a big fan of Mexican food, but then I found the good stuff. And it's pretty darn good! (For the record, you should check out the deli in the Chavez Market, San Jose location only. It's better than most "real" restaurants in terms of price, service, variety, etc.).
I missed Chavez ever since I came back, but was pleased to find Dona Cata! The menu isn't as extensive, but it's quite good and inexpensive. This looks like the real deal, with the "usual" burritos and tacos, except it's not the usual. Fresh tasting and tasty, not heavy at all. They also have daily specials and other things too. Once in a while pozole pops up, and the horchata is really good, maybe the best I've had yet.
Service was very friendly. Definitely not a fancy place, but a great place to stop by for a quick Mexican food fix. We'd go back.