Just one point on this subject. There may be some toilets that are not just as we would want, but I have never known anyone to be ill, in Arillas, with sickness or food poisoning.
Also, I always like public toilets that don't have door handles. You can wash your hands as much as you like but if the door handle is contaminated you will still get "things" on your hands. Even hospitals in the UK don't address this problem. You see lots of notices about washing hands and using gel, but you still have use a handle to open or close a toilet door. It only takes just one person not to wash their hands properly and you have contamination.
If I have to open a door I try to use paper or just use my little finger