I was on a work trip in early October 2016 and had some time off in between my conference. I was in a hurry and trying to figure out how I could learn and see the city of Berlin on a time crunch. I got into a cab randomly and asked the driver to bring me to the Berlin Wall Memorial - he looked at my puzzled and said, you are here now. After some conversing back and forth, I found his English to be very good and he told me he could take me around the city and show me everything I need to see. We agreed upon a rate for about an hour of service. He took me ALL OVER Berlin in his taxi (side job) and explained in great detail all of the historic sites, he was extremely knowledgeable. This worked out fantastic as I only had about an hour and had so much to see. He knew everything about EVERYTHING. Would reccomend him to anyone who needs a solid tour guide - he can customize your tour to your budget, time constraints, and what you need/want to see. 

Loved it- Hasim is the man!