24 year old student, looking for an accommodation in Reykjavik

Hi, my name is Nela and I am an exchange student from the Czech republic. I will be studying law at the University of Iceland in winter semester of 2016 and I am looking for an accommodation there. I would prefer a studio apartment but I would be glad for a shared apartment or room as well. I am tidy and modest and up to anything funny. I really love sports, especially running and yoga. Since my departure is geting closer and I still have no place to stay I am geting a bit desperate and I would be glad for any kind of help considering the housing. Thanks, guys!