And I think there's a currently underserved niche of single/DINK people who would enjoy the freedom of remote work but don't want to spend the working day socially isolated.
I'm not sure how underserved it is. I suspect that a lot of people just don't want to pay for a co-working space out of their own pockets and would normally content themselves with going to coffeeshops, etc. to get out of their apartments.
Added: And people can make do with situations for a limited length of time whether working from their kitchen table or suffering through a 90 minute commute that aren't necessarily sustainable long-term.
Maybe there is some in between? Personally, I like the idea of the cafe as a local work space I can walk to from my apartment, but would love it if there was some guarantee of having a desk and niceties like a monitor or print/copy/fax/ship. I would pay some membership dues for a coop space like this.