I found some additional links:

http://sfist.com/2014/11/21/tech_co-op_the_negev_faces_furth...

https://www.thenegev.com/#/building/negev6

If you look at the first link there appear to be four floors. There's a 3d view in the second link. It looks like that bottom floor visible from the street is the main communal living space. Below that is a basement with laundry, workspaces, and theatre. The three floors above those are the actual "apartments". I'd guesstimate they are about what you'd expect from a dorm room in size.