I wonder how many of these building types would be legal in the US just due to fire codes that were created for a different area. In most of the US apartment buildings units must have access to two stairwells which in essence limits everything to a double-loaded hallway layout. That makes it harder to build units for families and makes it impossible to have more windows and a cross-breeze. More complete discussion: https://www.niskanencenter.org/how-to-build-more-family-size...