Long term WG

I'm a 34 y.o boy coming from Athens-Greece. I've recently signed a contract (on 01/04) to work as PostDoctoral Scientist until 01/04/2016. I live for the past 3 weeks at Kreuzberg in an apartment rented via Airbnb. I will check-out next Saturday and I'm looking for a permanent residence. My work gives me a good stable income so it won't be a problem to fulfill my obligations to the WG. I have a very heavy work schedule and most of my day I am at work...sometimes even overnight. I'm very easy going type, calm and tolerant. I speak English and I can understand French but no German yet...although I want to learn the language in the next months. If you want further information please feel free to ask anything you want.