Isabella's has an astonishingly-comprehensive menu filled with creative gourmet alternatives to regular burgers, wraps, salads and sandwiches. The portions are fairly substantial, and super-tasty.
Don't visit if you're in a hurry though. On both our recent visits it seemed like the restaurant's relaxed atmosphere intoxicated it's staff into a Sunday afternoon-like slumber. :)
But, the lack of speed and sparkyness is made up for by the surroundings and food. So, heed my advice if you're in a hurry, but do visit them if you have some time to spend.