Exchange student from Sep 2016 until Jan 2017, looking for apartment or room in Helsinki

I am looking for an apartment or room in a shared flat. If you can offer a room in a shared flat I would be happy to bring a nice and friendly atmosphere to the flat. Cooking, doing sports together, going to concerts (I love indie, electro, jazz, hiphop, whatever), singing karaoke, exploring bars and museums together, just having the best time of the life etc. - I am in :) 

It would be great to rent a room close to the University of Helsinki or the city center of Helsinki. 

Maybe you know someone from Helsinki or someone who will go abroad or someone who is doing Erasmus in Helsinki at the moment and will rent her/his apartment after this semester. I am happy for all information! Thank you:)