Dirk's apartment was absolutely fantastic. While it's not super central it's a 2 minute walk to the subway which can get you to the center in less than 20 minutes. The apartment itself was beautiful, the internet was fast, the bathroom was really nice, and the bed was super comfy. Dirk was also always available via Airbnb or WhatsApp to answer any questions we had. Will plan to stay here again next time we are in Berlin.