Full disclosure...there are 110 stairs to ascend to this 5th floor apt. There is an elevator big enough for 2 pc of luggage and 2 people that we were allowed to take upon check in and check out. After that it is the stairs everyday. We enjoy extensive walking so the climb was not an issue for us.
The apt is light filled from all the skylights and windows in the rooms. Loved the brick walls, tall ceilings and modern decor. It is a lovely little place, perfect for 2 people and a great location for seeing all that Berlin has to offer.