Well kept, cozy and quiet flat in Kreuzkölln

I'm offering a well-kept apartment with a fitted kitchen in a quiet, yet lively neighbourhood right by the canal. Lots of green spaces and parks nearby, as well as several bus lines. The max duration of this swap would be 4 years, with possibility for extension, as the owner may want to sell it after 4-6 years. I'm looking for something much larger for 2. At least 2 bedrooms and 70 sqm are required, as well as great sunlight exposure.