Looking for one room flat or flatshare(17.Mar to August/September)

hello. I am looking for a one room flat or flatshare for five/six months(Around 17.March to August/September) with a parking space. I am Japanese man and I have worked as a teacher at Japanese school in Duesseldorf in Trier university. Before coming to Germany, I was also a school teacher in Japan. My German level is still beginner, but I speak English very well and of course Japanese. At this moment, I do a flatshare with German friend in Duesseldorf for 4years, and this time, I got a seat to study German for six months from the end of March to September at Passau university. If someone interests me, could you let me know, thanks! As for my hobby, I like travelling and hiking around mountains in southern part of Germany in summer, and also skiing in winter. If someone who gets interested in me, could you let me know, please.