Erasmus students and students receiving a scholarship on the basis of bilateral governmental agreements are allocated a place in the University student dormitories (sharing with another student) if they ask for this in their application. For other students, the Office for International Relations can also arrange a place for you in the University student dormitories. Information about the student dormitories and student canteens can be found here
Of course if you prefer you can find your own accommodation. Unfortunately there is no university or faculty accommodation agency. There are many commercial agencies which can be found on the internet, but also, unfortunately, a few frauds, so be sensible. Alternatively you could stay in a hostel or other temporary accommodation to start with and look for more permanent accommodation after you arrive.