Visited May 2007. Would I return? Many times.

LOCATION:  El Cangrejo, down the street from the Wine Bar, on the right as you turn the corner.
FOOD: Argentinean steak house and always good. Bife chorizo to grilled chicken, morcillas, butifaras, fresh salad bar, etc.  
SERVICE: Good 
AMBIENCE:  nice, not fancy. 
PRICE: Moderate 
OVERALL: 3 stars, easy and fun