We were extremely impressed with this hotel. It was clean, stylish, quiet, and comfortable. Our room was also much more spacious than we expected. Very friendly staff and easy check-in. Centrally located (right next to Checkpoint Charlie) and well-connected to public transport.
We were especially surprised with the quality of service considering the low price point. Our room was provided with toiletries, fresh towels, and even our bed was made by staff each morning. It's not what we'd normally expect from a 'budget' hotel.
Just a great experience - hope we can stay here again next time we're in Berlin :)