This is the ideal type of property for a growing Lebanese family.
A floor per generation and a shared terrace for fresh air and hanging out the laundry. Everyone within shouting distance, free childcare from the older generations downstairs, help around the home from the two upper flats, and entertainment from the youngest additions.
Of course some of these small blocks of flats are occupied by unrelated owners. But even in the most modern buildings in town, you will find generations stacked on top of each other. Proximity and practicality take a natural precedence over privacy.