Space-saving

I think a lot of familiar problem of "free space" in the house or apartment - when you go to a compromise between space and necessary things.
And if someone has the opportunity to add a little area by a loggia or pantry, some are deprived of such opportunities.
Swedish artist Michael Johansson designer offers to solve the problem of "free space»
depicted below. Great idea, but I wonder how long it takes packing-unpacking?