This is a very nice, spacious and nicely decorated apartment located in one of the best areas in Berlin. You have access to a big living room, a kitchen connected with a diningroom (I like the lit "O" neon! It's neat) and a newly-renovated bathroom. The place is great. The host is super-friendly and will make sure to help you with any reasonable needs you might have (they let me borrow their bike). I've spent a week there, and would gladly spend many more.
Highly recommended.