Hello!
Your flatmate is absent during summer? Or you are planning to go abroad yourself? You could rent your room to me! I would keep it clean, be careful with everything and in case you have any neighbours: I don't make much noise and I don't smoke. My internship at WHO lasts from the 15th of august to the 31st of october, so I'd need the room for about 2 and a half months.
Thanks a lot!
Renate Berger