I am coming to DC two Mondays from now and looking for an idea for a romantic, but casual late (10pm-ish) dinner in the Downtown/Dupont Circle area. Open to cuisines and not worried about price, but I just don't want a stuffy/upscale or steakhouse type atmosphere. Looking for more of an intimate wine or tapas bar feel. Would love some suggestions. I am out of touch with the DC scene.