Norwegian exchange student looking for accomodation

I am a 24 years old norwegian student who is looking for a place to live in Munich the next year. I study industrial economics and technology management in Trondheim, Norway, and I am planning to take my third year as an exchange student in Munich from October 2016 to September 2017. I will be studying at TU München.
When I am not at school, I like to stay active. I run, swim and do cross-country skiing. I also like to go out with friends.
I have spent the previous three years sharing apartements with other students, so that should not be a problem. I currently stay at a short term place in Munich, but I'm looking for a long term rent.