20 year old student looking for a room in Berlin

I currently study Tourism Management in Amsterdam and will be in Berlin for an exchange program starting the beginning October and will be finished around mid February.
I am an outgoing, open-minded and social person who likes to have a good time but also likes to keep things tidy around the house. I smoke but don't mind smoking outside. Preferably I'd like to find a room in/near Kreuzberg or Mitte with a shared living space and some fun roomies.