Great flat when staying in Berlin!
We (a couple) stayed in Berlin for a week and this flat made our stay even better.
The location is great: there's an UBahn station right in front of the door, and you can also find a bakery, supermarket, etc right in front of the door.
The flat itself is very nice, it's equipped with everything you need and clean.
There's also an elevator which is quite handy. And it was also rather quiet within the flat and building.