Well, this is the first affordable listing I have seen in a while. It's not legal and your roommates would probably steal everything but it's a cheap place to sleep. I'm a little surprised landlord didn't go for bunk beds to double their income (or bed over lockable wardrobe so it sucked less to live there).
EDIT:
Although illegal and there are concerns around fire safety, this type of housing could work well for people on very low incomes. They don't normally have many possessions (take what you care about with you). I think gov't is paying >$100/night (>$3000/month) for each room in entire hotels for homeless people. This type of accommodation is far cheaper and not that much worse in the face of limited budget and high need. Also spreads out people to avoid making a ghetto. Obviously many landlords wouldn't want to rent to people with very limited income but this landlord has already accepted that fact. I don't see people with stable living wage jobs taking him up on his offer.