Here are some simple icon designs. I like how easy clean they are and each one has a specific opening to it that allows the icon to be a part of the background. I also like how they are all see through and tie in well the background also.
The contrast between the light shade of wood and the darker shade of wood really creates a unique yet elegant style to the bathroom signage. I believe that this design would really appeal to the guests as it is as well very luxurious.