I chose this hotel because it was walking distance to the Brandenburg gate and I had limited time. I enjoyed my stay, and would stay again.
I had not pre-booked the breakfast, because being gluten free means breakfast isn't always worth having, however after talking to the reception staff, I decided to give it a go and enjoyed it very much. I appreciated the warm gluten free bagettes I was given. Lots of options. The only thing that would be helpful is adding allergy notices, so I knew which of the meats etc contained gluten.
The location is close to the Tier Garten, a massive park in Berlin and great to walk in.