The building from the Wilhelminian period in the Callin-street 18 was established for upper-middle-class use. In the years before the general renovation, it was oc-cupied by different institutions of the Leibniz University of Hanover. The conversion to a student residence turned it into one- and tow-person apartments with their own bath-rooms and kitchen pantries, as well as into shared apartments for 3 people with shared kitchens and baths. A new flight of stairs was added to the semicir-cular
