If you like trendy transparent glazed façades to offer more daylight, here's another example of what they can do to affordable housing in Central Paris.
110 student and 30 social units with a little room for some small businesses (I'm assuming some retail). That one is in the 19th arrondissement. They say their main effort was to build a concrete skeleton as slight as possible, to provide every unit with more room in addition to generous daylight. The usual little problem of such glazed façades is their inferior energy-efficiency.
It's some nice infill anyway. Just too bad they wouldn't add a couple of more floors to it.