Modern apartment with very comfortable bed, great water pressure in shower, warm inside without even being aware the heating was in the concrete floor, unique lighting and of course, brilliant location. You can get to most tourist sights very quickly from Gleisdreieck station which is an easy 10 minute walk away. We were there in January, so no problems with curtains. The kitchen sink is amazing. Just beware of the tap and move it slowly .. some of its operation is counter-intuitive. We loved our stay at Stefan’s.