I've been to 3w coffee in June, and I thought coworkers space moved out of there. Guys who were running [1] now rent small space for themselves in Shekou. My feelings there were similar to [2], that is it's a coffee shop feeling with a lot of power plugs.

(difference between coworkers space and working from coffee shops is that I pay a month/day fee and don't need to worry about buying coffee/eating to not feel guilty of taking their space :) )

There's one more place trying to open but their location is really far even for Shenzhen standards :) (Bao'an)

[1] http://szteam.com/ [2] http://www.coworkplanet.com/coworking-in-shenzhen-3w-coffee/