The flat is between Kreuzberg and Mitte and super central. You can reach Friedrichstraße and Checkpoint Charlie within 10 minutes, visit the jewish museum (right opposite) or walk towards Kreuzberg by the riverside. The flat is connected by bus and U-Bahn.
You'll live in my room. There are 4 other people living in the flat, mostly students. All really friendly people who'll love to show you around a bit :-) There is a kitchen you can use at any time of the day and a big bathroom+a smaller one.