Your linked article says around 100k people live in those cramped quarters. Fair enough, that's roughly 1.3% of the population (7,234,800 as of 2014 estimate).

Your linked article says around 100k people live in those cramped quarters. Fair enough, that's roughly 1.3% of the population (7,234,800 as of 2014 estimate). In other words, there's plenty of people living in what you and me would classify as normal apartments. Albeit perhaps not incredibly spacious.