For starters, start here.
http://eccie.net/showthread.php?t=1446937
I would recommend airport area, and avoid downtown.
Restaurants...
Since you mention Mexican as a favorite in your profile, people here like Los Barrios, La Fogata (personal favorite), Paloma Blanca, Los Robertos, etc...I'm sure there are others people will mention. Just a few I remembered from previous threads.
Can't go wrong with Pat O Briens downtown. Block from the alamo and river walk. Amazing Hurricanes and great food. Josephine Street is great place for steak, sandwiches, burgers etc. Highly recommend.
Stay safe and have fun!