Stijn Sillen: One of the best I ever had. The fish is really fresh. Order downstairs, then go eat it upstairs on the terrace, enjoying the sun and the view of the harbour. Or eat inside on a rainy day.
Stijn Sillen: Very nice museum. Not the cheapest (2500 isk), but definitely worth it. You can discover the history of Iceland from the first Vikings that sailed there. They have audioguides in several languages.