I'm a New York Chowhound currently working in Houston midweek, and staying at the Hilton Americas downtown on Lamar. I work late hours and have lived for two weeks on room service -- a tragic plight. I beg of you Houston Chowhounds to recommend someplace local and good that will a), deliver to the hilton, and b), take american express, and c), taste better than room service. Vietnamese, sushi, salads -- any and all of the above, or any suggestions you have, would be wonderful.
If it isn't immediately apparent: I'm feeling a bit desperate.