The burgers here where enormous and very good! Not the best burger I had in Madrid but still very good! I tried the Fanta Strawberry which we dont have in our country. The waiter was not very friendly...we had to google translate all the menu because we dont understand spanish...in other restaurants the waiters offered to translate menus for us when not available in english but not here.
Went with the family after Christmas, burgers are huge, but don't think it's quality over quantity! The burger patties were cooked exactly how everyone wanted it, the chips were great, and the beer selection was bigger than I thought, with a number of American beers available. Good place to go with friends for a quick bite to eat