Tom was a very informative host for my two companions and I. He contacted me prior to arrival to let me know that there would be construction on the building so that I could rebook if necessary (it turned out to be fine since we had to get up early anyway). Tom was patient when our bus was delayed by more than 2 hours, and when we finally got to Berlin he helped us organize our schedule and get the right transit passes. The flat was clean and in a nice residential areas with lots of restaurants and cafes but close to a unsung stop. I wish we could have spent more time in Berlin!