*** Great to fill up a large raised bed, and add the planting on top. Next season will have great soil. Lasagna Gardening Layers - no dig gardening! Just layer and plant - this creates it's own soil even where there is none.
The timber deck on the shower area can slide over the sunken bath to increase the size of the space. The walls and floor are in a black homogenous tile and is matched with a dark stained timber venetian blind.