Master thesis student looking for temporary accommodation

I am 25 years old pharmacy student currently living in Gothenburg, Sweden, who is searching for a temporary accommodation while I do my master thesis at Freie Universität in Berlin during the fall. I am looking for either a WG or a single room apartment. Preferably in the area around the university but other areas would also be of interest. I would describe myself as a nice and clean person and I currently live in my own apartment in Gothenburg. During my free time I like to spend time together with friends and family and being outdoors. I understand some German, but I prefer English. Hopefully will my German improve during my stay in Berlin. I plan on coming to Berlin in the beginning of August, but the dates are quite flexible.