I was in Berlin on business and only had one full day free, so I wanted to make it count. Karin did not disappoint. She took me all over the city and shared her expert and personal insights. She was born and raised in Berlin so she has many personal experiences that she shared, which made the tour a step above the average tour. She was also very flexible and willing to adapt the tour to what I had already seen and not seen. We had a wonderful lunch together at the Bundestag, then finished the tour with a beer at an outdoor cafe. She knows so much about the city that I think you could easily spend two or three days with her. Highly recommended.