Well, I don't have a workspace per se, but for juice and rebuilding, I use the 'ol kitchen counters.
Lappy for Internet tools and reference as well as eJuice Me Up on one side, decent space on the other for my Tacklebox of Doom. It's nice to be vaper-towel and sink adjacent too.
Cupboard about the micro is where I steep juices and keep a few misc things. As well as my coffee beans. It's a nice-smelling cupboard. ;-)
And, when I'm done, it just gets put away. I do need another tackle box pretty soon though, that one is FULL.