19 year old girl looking for any type of accomodation in Cologne

Hello! I am an Erasmus student coming to Cologne this August just for fall semester and I need a place to live while studying that semester for almost four month. Any other possibilities like renting a month or only two are also acceptable. I speak fluently Kazakh, Russian, English and Turkish. and now learning German :) I would like to have any type of accomodation, the only thing I want is the accomodation to be in the city of Cologne, not in neighbourhoods and I would like my roommates to speak English or any other language mentioned above :)