Christoph's place is excellent!! Well located (the tram was just under 5 mins walk which takes you directly to the city centre), warmly furnished with everything you need. The unit was spacious and the kitchen was well equipped. We had a wonderful and comfortable stay and Christoph was friendly, hospitable, helpful and gave us all the tips of what to do, places to visit etc. and even helped up get around in Berlin!
Our only regret was that we didn't stay longer - so will have to make another trip again!
Thanks Christoph for a really great stay!