I've been here a few times and I have to say, they consistently make the most amazing burger I've eaten. I get the Harpers Fairly Good, medium well. It's topped with a beef sauce, Boursin cheese, fried onions, and a fried egg. It's a $15 burger and it's worth every penny. I get it on lettuce, without the bun, so it gets eaten with knife and fork. I've only tried this burger, but others have said the shipwreck is also fantastic, which I think is their most popular burger.
The drinks are always well made, and in the summer it's really nice to sit outside on the balcony looking out into the city and market square.
Just a really great place and a super awesome burger.