Oh come on hn, we can solve this riddle. I found another article - doesn't it say the owner runs a Karaoke Bar and an Asian Shop? http://m.tagesspiegel.de/berlin/polizei-justiz/razzia-in-mar...

If there is a German native around that should lead us to the name in 10 minutes of phonebook/yelp digging that Marzahn street....