We just returned from Berlin after staying in Karsten's Kollwitzplatz apartment for a week. It was everything he said it would be, plus a little more. Everything functioned as expected--plumbing was good, washer worked well, dishwasher too. It is very conveniently located about 3 blocks from the U2 (Red) underground (U-Bahn) line. There are lots of restaurants in the neighborhood serving all types of different food, and there is a small grocer just around the corner--literally about 50 feet from the door of the building. There's a larger farmers' market on Saturdays that has green meats, cheeses & veggies.

The apartment is very comfortable--the furniture looks relatively new. The bed was very good.

We'll definitely stay there again when we return to Berlin.