The popular areas within the ring amount to single digit percentages of the Berlin metropolitan area.
The city of Berlin was confined to that region during the 20s.
https://www.myleszhang.org/2020/01/31/berlin/
Let me be clear: I'm not happy about the rent situation, or about the real estate investment market.
But saying that people are not having kids because you cannot feed a 4 person family on a single salary while living in mitte, yeah, breaking news.