The averages in Germany (Mietspiegel) are always calculated taking different factors beyond the size into account: location, proximity of public transport, nois

The averages in Germany (Mietspiegel) are always calculated taking different factors beyond the size into account: location, proximity of public transport, noise level, age, interior quality (windows, floor, etc.), energy consumption, and similar. Oh, and the law doesn't apply to the (rare) furnished flats at all.