PhD student looks for a flat/room in Berlin

Hi, I am a PhD student of psychology coming from Serbia, and live in Berlin since May this year. I am looking for a place where I could devote to my work, so pretty quiet during the day. And let´s decide spontaneously what happens in the evening :D

I would like to have a roomate/roomates that are ready to talk about things (concerning the shared living), make decisions together, make compromises. I am generally quiet and like my environment to be neat, but don´t really like extremes. I appreciate balance and spontaneity, and wish for a friendly and pleasant and lively atmosphere above all.

We could also talk in German :)

Hope to hear from you,

Aleks