Ask HN: anyone from Berlin startup scene?

Hi, I am an Italian computer scientist who will be in Berlin for a few days starting next weekend. Since I will have Saturday 24th and most of Sunday 25th free, and since I have heard that the startup scene and related "hacker" community is pretty big over there, I was wondering if any HN reader also happened to be free on those days and would not mind chatting over a coffe or a beer, sharing some experiences. Or even just point me to some co-working spaces/hub where I could just step in and watch people creating something. My main interests are games, graphics/visualization, and data retrieval. You can find some of my contacts in my profile. Hope those kind of threads are allowed! In any case, thank you in advance.