While waiting in line to check in, a guest came down from the elevator, cut in front of us directly and proceeded to ask a 15-minute question. While the guest should not have behaved this way, reception should not have allowed this to happen. Found out later, that guest was staying in one of the suites, so clearly the reception had a bit of a classist attitude towards us, who arrive with trekking backpacks.
From that point on, the hotel was a disappointment. For what we paid - over $150 a night, this place was a true disappointment. We had specifically requested and paid for a king bed but were given a room with two twin beds. When we brought this to the attention of the staff, we were told, "this is how all our rooms are and you will be fine". But, we weren't. Like with all German hotels who do this (and really shouldn't be allowed to advertise a King room), the two twin beds that had been pushed together, slid apart as we slept, causing a chasm to arise between us, into which we nearly fell. The hotel staff did not care at all about this.
The location of the hotel is fine, though not really near any coffee shops or cafes as the Gendarm area doesn't really "open" before 10:00. Many nearby bars (and resulting loudness on the streets), though the room was quiet enough.
It is nice that the hotel, like many German hotels, partners with Save the Bees - i.e., you ask for no housekeeping to help conserve water for the bees/the planet.
Overall, for this money, there are nicer hotels in Berlin, far more worth your attention.