I really enjoyed my stay at Carsten's place. Carsten is a calm and friendly host, who wants to make sure you have a perfect stay. The flat is large - so you don't feel like intruding his personal space -, and everything you need is there. It is located in a nice area, on the edge of the centre, so you can easily walk everywhere! Despite it being central, there is no nightly noise - I slept like a baby.
I would definitely stay there again!