Just think about the produce that you have to buy at the store that will be part of this tiny patch's yield. Tomatoes, peppers, basil, cucumbers, squash, and more. Using raised beds with a liner solve two problems common around here; weeds and crappy red clay soil. Now, all you need is a BB-gun for the HOARDS of squirrels, chipmonks, birds and the rest that will pick off tomatoes, etc. To top it off, there is a water drainage tube that comes down the side of their apartment, so IF the water's clean it would be easy to attach a drip irrigation tube and snake it through the beds.
Flash forward, like, a month and it looks like the garden has already begun yielding.