This place is lovely and clean. It’s warm and comfortable- would love to go in the summer when we could enjoy having the balcony doors open!
Ask for a high floor though (they own the whole block) as the noise from the pub and trams is non-stop and pretty loud on the 1st floor.
Make sure you plan your airport transfer well as there is no direct train (we just walked for 25mins from Friedrichstrasse).