We've visited Heike's a few times. It's never too busy, cause everyone's queuing for Mugg & Bean. Food is excellent, reasonable and service good. They have interesting German food, eg Fleischkase. Or German Sausage. I had a Tuna Bake (tuna on toast topped with cheese baked in oven) - yummy! It's really worth eating there. They also have all kinds of interesting honey products and imported sweets next to the till.
07 January 2013