Mr Brunner is a very knowledgable guide, who both knows and truly enjoys his subject. His enthusiasm for showing us interesting and unusual things made our tour unique and very enjoyable. We particularly enjoyed the ability to customize it to focus on particular things we were interested to see. Mr Brunner was very well-prepared based on the areas of interest I had sent ahead of time, as well as the purpose of our visit. We hope to return to Berlin next spring and look forward to seeing other aspects of the area. Quick word on logistics: in a word, they were flawless. The booking process was easy, communication prompt and complete, pickup at our hotel was flawless and, in fact, early. The clarity of the website made the booking process simple, and the ability to customize, rather than take a standardized tour, really stands out among your competitors. Thank you Mr Brunner and team for a great experience.