I stayed here for a month and loved every moment.
This is an especially beautiful and well-designed space - the kitchen area and bedroom are as sleek and beautiful as they appear in the pictures. The bathroom even more so with wide sink and waterfall shower with water massage-thing.
It also happens to be in an amazing neighborhood in Berlin - the best: Neukolln. Some even call this particular area Kreuzkolln - which sounds a bit too hip - but the area is actually quite diverse. There are several restaurants and cafes so close you won't even have to put a coat on to visit them in the dead of winter. Dots cafe, downstairs for example, and Beuster on the opposite corne. A block away you have Nathan& Heinrich, a great wine bar, and Follerei, a very crafty restaurant. Lots of turkish bakereis and cafes and other amazing restaurants/bars/cafes as you move further afoot.
All to say, it's quite a lovely place to stay in Berlin. I had been considering something in Kreuzberg, but am so glad I didn't do that. This is a place you can call home.
Highly recommended.