I'm looking for an apartment in Cologne

Hello, my name is Roberto and together with my brother Alonso we are looking for an apartment where we can stay for a long time. We have a Working Holiday Visa to stay in Germany, and we are currently working in Cologne. We are responsible, calm people with healthy habits. We like to go to the gym after work to stay in good physical shape. We like to go out for walks to see different places in Germany. Our goal is to save money and also enjoy our time in Germany, sharing our experience with our family, friends, and acquaintances. Once our Visa is over, we plan to return to our country, Chile, to meet up with our family and friends. I will also resume my job as a physiotherapist and my brother will continue his studies.