When you are having people over and would like to create ambiance, (assuming your bathtub is on the same floor you're hosting people) fill the bathtub with water. Add a few drops of food coloring if desired, and place some fresh flower petals and floating candles in the bath. You may also add some essential oils for scent. When guests walk into the washroom they will be pleased at the sight!
If you have a powder room instead, fill a large glass bowl using the same method and place it somewhere on the floor or the top of the toilet tank if it's small enough.