> The Khrushchev flats had communal kitchens

Khrushchyovkas did not have communal kitchens; I grew up in one [0]. Perhaps you are thinking about kommunalkas [1]?

[0] https://news.ycombinator.com/item?id=7935844

[1] https://en.wikipedia.org/wiki/Communal_apartment

yes. I was completely wrong, thanks for the correction.