having had our fill of german fare at the Christmas markets - our hotel recommended that we try a place called Sushi Glas on Kornmarket,
This is a very modern spot, quite busy and had some of the best sushi we have had.....my spouse is more a critic of sushi than I am - and he raved all the way back to the hotel.
They also have a great selection of sakes....if you do not read german, ask for a description and choose one to try! You will be glad you did.
We had an outstanding sushi sashimi combination.