Waterfall shower and bath - I'd add a divider that goes up and down at the push of a button so it keeps pool and shower/bath water separate and drain out. After shower/bath, the dividers go down and the area fils up to extend the pool.
Bamboo thrives in the bathroom. Lucky bamboo needs very little light and should be placed in low, indirect light. It doesn’t even need any soil – simply pop the stalk into a container filled with pebbles and water.