Mar del Plata
Mar del Plata, 1410 14th Street NW, Washington, DC, near Logan Circle, 202-234-2679 (Metro Trip Planner - opens in new window) [Washingtonian | WaPo | City Paper | openlist | Citysearch]
A useful restaurant in a dining desert, near the Whole Foods. Mostly seafood but get the pork chop. Not cheap, but your options in this area are slim.