German intern at Kraft Heinz looking for a room in Amsterdam

I'm 23 years old, half German half Belgian and about to start an internship at Kraft Heinz in Amsterdam. My internship starts the first of July and lasts at least until end of January. I'm looking for a room between the centrum and amstelveen. Ideally, I would like a fournished room with close access to public transportation.I'm a clean and easy going person who is looking for the same kind of roommates. If you have anything matching with my needs please let me know.