Karsten is a great host, the flat was everything we expected and more, and the neighbourhood is a perfect mixture of central, but quiet and safe. The nearby underground station is perfect for getting all over the city (if you are staying more than 3 days, the 7 day pass is cheaper than the 5 day tourist pass). There is also an amazing bar right round the corner with great food and beer. It is also a great place to chill out after a long, hot day in the city.

All in all, we couldn't have asked for a better place to stay during our time in Berlin.