Postdoc researcher looks for a long term apartment

I am a postdoc at Uni-Bonn looking for an apartment. I am interested in a rental contract for 2 years with possible extension.
The best I could ask for is a quiet place, near some green areas and warm in winter. It would be nice to find a furnished one, but I'm open also to offers with partial or even absent furnishing.
I am a quiet and polite person, respectful of the others' tenant space and privacy but always at disposal to give a hand if necessary. I have experience on housework, so I also know how important is to preserve the good conditions of an apartment.
I am a clean person and respectful of rules, and I think I would be a very good tenant.