Gerd was a sensational, informative, FUN host and his apartment is incredible - unbelievably huge, sunny, stylish, super comfortable, on the first floor, with a flower filled terrace for smoking... there were three of us, but with four gigantic rooms it can easily sleep three couples plus a single! And it's in a great, non-touristy neighbourhood - but close to all the action via walking, bus and S-Bahn. Highly recommended, phenomenal value!