Here are a couple of recommendations depending on what type of food you are looking for:

Zengo - Asian/Cuban Fusion
Rioja - Northern Italian
Vesta Dipping Grill - Varied menu
Capital Grill - Steak
Tamayo - Upscale Mexican

All are either within walking distance or a very short cab ride from your hotel. Let me know if you have any questions, or want any more specific details.