When this UN apparatchik makes the observation that "Barcelona is one of a few governments to affirm the social function of housing" she displays an apparent indifference to the culture of fundamentally bankrupt states, like Spain, that regularly chase the chimera of 'human rights' all the way to the poor house.
Guess what?  There are places we cannot afford to live.  Get over it!  
There are plenty of other affordable places to live, and only the most deluded entertain the idea that the global economic system should be turned upside down so that they can afford the house of their dreams in their favourite neighbourhood.