(Full disclosure that this response is transcribed from my retired civil engineer father, who is the primary source of any information I have on this subject)
Obviously most of the true Khrushchevkas are pretty old, but they were solidly constructed. Not huge, but the layout is pretty reasonable (square plan with living room / kitchen / bath / bed), you can look floor plans up online to get a better idea. The major points where they win over the modern hell that is a 5-over-1 are sound isolation (yeah famously they had no sound proofing, but it’s still a great deal better than what you find in any US stick n’ brick), access (you could pretty easily move a couch up the stairwell), fixtures (this one is both my own subjective opinion and not uniform across all designs, but the ones I have seen were quite nice - decently modern gas appliances (water heater and stove) and branch control radiators (I think this is the wrong term, apologies, I am very tired) as well as in-ceiling lighting fixtures instead of switched outlets - none of the apartments around [where I live in the US] have lighting fixtures outside of the kitchenette and bathroom), and just space (They were, despite being tiny, quite a bit bigger than the rooms I live in now)
(Full disclosure that this response is transcribed from my retired civil engineer father, who is the primary source of any information I have on this subject)
Obviously most of the true Khrushchevkas are pretty old, but they were solidly constructed. Not huge, but the layout is pretty reasonable (square plan with living room / kitchen / bath / bed), you can look floor plans up online to get a better idea. The major points where they win over the modern hell that is a 5-over-1 are sound isolation (yeah famously they had no sound proofing, but it’s still a great deal better than what you find in any US stick n’ brick), access (you could pretty easily move a couch up the stairwell), fixtures (this one is both my own subjective opinion and not uniform across all designs, but the ones I have seen were quite nice - decently modern gas appliances (water heater and stove) and branch control radiators (I think this is the wrong term, apologies, I am very tired) as well as in-ceiling lighting fixtures instead of switched outlets - none of the apartments around [where I live in the US] have lighting fixtures outside of the kitchenette and bathroom), and just space (They were, despite being tiny, quite a bit bigger than the rooms I live in now)