What is the situation with public toilets?
You must usually count on the generosity of some hotel or restaurant, or duck into a museum or other attraction. Although it’s rare that a tourist would be denied the use of the facilities, you should always ask first. In broad terms, the sanitary condition of public restrooms in Cuba is much higher than those found throughout the developing world, although at many establishments,toilet seats and toilet paper are often missing. ****Always bring toilet paper with you wherever you go!
Many restrooms have an attendant, who is sometimes responsible for dispensing toilet paper. Upon exiting, you are expected to either leave a tip, or pay a specified fee. If the restrooms are not clean and you do not take the toilet paper, do not feel obliged to tip. Otherwise, leave up to CUC$.25