Clean and cozy beds, room was cleaned nicely everyday.
Had vending machines on floor 3 & 5 with a good selection (however the mini-bar was free of charge during my stay, refilled everyday :) ).
Reception was friendly and accommodating, with extra resources during peak hours.
S-bahn just across the street, as well as an amazing german restaurant.
One of my first choises of hotels for my next buisnesstrip to Berlin.