On recent trips, I've stayed there, or at the Ibis budget next door (the latter when having c*cked up trip arrangements to coincide with the German cup final, including all the BVB supporters).
Both hace a nice layout, with the lifts directly ahead of the entrance door & reception offset to one side, so one doesn't have to walk past them with the latest trade.
Anyhow, I'm plotting my next visit to Berlin and the Scandik K'damm is coming in cheaper than the Ibis, whilst looking like a better hotel.
Now what's the risk of difficulties bringing guests past reception here ?
Berlin is (currently) one of the most liberal cities on the planet, so I suppose it will be OK, but if they did object, that's one way to really bugger up a holiday.