This isn't necessarily true, especially for the original building program. Pre-war apartment buildings for the masses (Zinshaus) were raised quickly and weren't

This isn't necessarily true, especially for the original building program. Pre-war apartment buildings for the masses (Zinshaus) were raised quickly and weren't maintained well. E.g., before regulations outlawed the cheaper variety in the 1990s, cheap apartments often lacked a bathroom of their own and relied on shared facilities. The public building program, on the other hand, was up to modern standards (and taking pride in doing so), while it was still aimed at efficiency and never intended to rival the residential buildings raised by private ownership for the middle class. So, if you expect high rooms, stucco, etc, you're probably in the wrong market. (Also, you may not be part of the intended audience, anyway.)