Looking for a room in a student flat or dorm from april 2016-july 2016

My name is Lotte and I am a girl from Leiden, the Netherlands who is currently studying the bachelor International Business Law. I am exchanging trough Eramus to Istanbul and looking for a room in the period of end of march 2016 or beginning of april 2016 until the end of june or the beginning of july 2016. I am very much looking forward to this experience and would like to make it complete by having a room in a place where everything I would love to see is not too far away!