Lovely place with four of the renowned local beer "Kaldi" on the tap, including an unfiltered one that the beer lovers praise to the roof. The door policy makes sure that it doesn't get crowded and you can always enjoy your beer with enough space to swing your arms like a madman.
The selection of Icelandic beers on tap should be a reason enough. There are happy hours between 16-19 each day and a special offers on sandwiches and beer. The place is decent and the service is mostly friendly.
Grab a seat and play the piano, but if you play poorly - then you'll be tarred and feathered.