Regardless of the environment, washrooms are a highly used area and should be maintained daily to very high standards. The washroom should be well-stocked with Hygiene products needed like soap, paper products, sanitizers, etc.
In general, people tend to judge Cleaning and Hygiene Standard by what they see when using your washroom areas. It is very hard to make a good second impression if they are unhappy with what they see the first time around. Therefore cleaning & maintenance regime should include regular checks of these areas and a monitoring system to confirm these checks are taking place and that standards are being managed and maintained.