These comparisons are completely meaningless.
The average home of 1930 was probably less than half the size, had no insulation, had cheap, single-pane windows, and if they had indoor plumbing and electrical service, it would have been limited to a couple of fixtures and all that very plain. It was cold, drafty, leaky, and with no modern amenities. And this home would have been shared by multiple generations and extended family.
A great many of the "apartments" in 1930 would have been single-room boarding houses with shared bathrooms!