Maria Maria is a Tex-Mex restaurant created by the group that started McCovey's, Bing Crosby's, and Joe DiMaggio's. We dined at their Walnut Creek place, but they're also in Austin TX, Mill Valley CA, and Tempe AZ.
Nice design, very thoughtfully done. A bit noisy. Good service. A professional operation.
Food is good, really good, and lots of it. We ordered too much: Seafood guacamole, duck tacos, chicken flautas, and taco soup. Interesting, widely-varied tastes; spicy. No salt, pepper, or hot sauce of the table; they're not needed.
Moderate prices, average wine list, nearby municipal parking.
If you have a chance, go!