I have stayed in more than 100 different Airbnb places over the last 4 years but this was the most interesting and influential on me personally for the work Frank has done with his amazing place is remarkable. It is the 1st time ever that I have seen a floor composed entirely of coins of many countries. On the walls are interesting and inspirational artistic and politically astute posters and awesome messages. The bed is most comfortable, the shower works very well, toothpaste and shampoo is provided and the coffee machine and coffee is excellent. Best of all is the location which is highly convenient for the subway station. Next door is excellent take away food and the bar 2 doors away is a happening place that is busy all night and day with most interesting people. I therefore highly recommend Frank's place to anyone coming to fascinating Berlin.