I was there for three weeks and ate ham and cheese omelettes for breakfast everyday.

Most bistros have hamburgers, and you can take them off the bun.

Having afternoon tea at one of the salons can take the edge off afternoon hunger.

And most restaurants have escargot. It's not cheap, but it's not as expensive as in the states. And they're always dripping with garlic butter. I had escargot almost everyday as well.

Have fun. And don't forget the cheeses, the cheeses, and the cheeses.