I'm in San Antonio right now...staying in the King William area. Lots of decent local restaurants and cafes, including:
Tito's Tacos
955 S. Alamo
I'm sure you could get more authentic Mexican/Tex-Mex fare in the outer reaches of the west side, if you know where to go, but I'm still feeling my way around the city.
Had lunch yesterday at Bay-Sea's "You Buy, We Fry" on the East side. Fried fare was decent, but not worth a return trip. The seafood gumbo is a different story--a light, spicy, crab boil infused broth/roux, loaded with seafood (although the shrimp were kind of tough) and tasty. The restaurant is 2-in-1, with Hill's Soul Food Kitchen sharing one side of the restaurant. Looked like they had a decent soul food buffet going, but I was there for the seafood.
Bay Seas Seafood
6934 W Military Dr
San Antonio, TX 78227
Phone: (210) 674-9221
Went to M.K. Davis last night for dinner...something of a San Antonio institution, with red velvet flocked wallpaper, burly wood tables and chairs, and a distinct, old-school, basement vibe. Food was solidly mediocre, but the beers served in gynormous "schooners" and a punchy, well-spiced house michelada made up for it. Don't take the bartender's recommendation for chicken fried steak. Fried oysters are the specialty, and they're neither bad, nor great.
We were told that the Sand Bar (location tbd) has a great raw bar, which we plan to explore for Happy Hour on Friday. Pictures and details to follow...
I also found a seafood wholesaler who sells to the public, and a few really good ethnic groceries, including a Korean market on the east side. I'm buying a heap of shrimp and making barbecued shrimp for dinner tonight, so I'll post the name of the wholesaler if the shrimp turn out.