That's interesting. It is considered a very decent size for a single person or even a couple where I live (Croatia).
But then again, I grew up in a family of five in a 45 square meter apartment.
Looking at places around me (Atlanta, Ga, USA), the second I filter down to < 750 sqft for any 1 bedroom apartment or condo on redfin.com I am left with about 5% of the search results. The average size seems to be about 900 sqft. Before buying a house most places I rented were also around that size, and my house 2200 sqft (204 sq m) with 3 bedrooms.