We had lunch at Ketchup in National Harbor a couple years ago and thought it was pretty good. I had a really good grilled cheese and the sweet potato fries were really good too.
I just moved from Alexandria back to Richmond, VA and I found the food scene in Alexandria mostly overpriced and boring. That being said, the food in Alexandria is still better than the stuff you'll find at Gaylord. There were a few places I enjoyed and went back to time and again because I couldn't find much else good; I recommend: