Flatshare or Studio-Flat

Hello everybody, I'll be coming to Dusseldorf from March 2017 to the end of August 2017 to complete my traineeship for the Mastrer Degree, at the Heinrich Heine Universitat. I'm a student in Cognitive Neuroscience. I'm looking for either a one-room flat or a shared apartment for the period I'll be in Germany (6 months). Preferibly, the flat should be not too far from the University and the city center. My budget is up to 450-max500 euros/month. I'm a neat, simple and clean person, who enjoys company and sharing experiences and ideas, but I also do appreciate having some personal space. Flats with pets are well accepted!