This is the way our bedroom balcony is progressing, it's not there yet, I would like a type of display structure, like 3 steps, to put the pots on, so they are lifted off the ground and also take up less floor space. No money for that at the moment.
They have geraniums in them, trailing Decora red. And one sneaky pink variety!!! My husband says geraniums in window boxes remind him of France (Paris, specifically).