HND - Tokyo Haneda has truly excellent toilets with all kinds of shower nozzles and features to help you get a very thorough wash. Very high tech and thorough. Best I've ever seen and far superior to those at NRT.

FCO - Rome has a hospitality Lounge (amica lounge?) for those with specific needs and the toilet there is very well equipped for disabled travellers. Has a basic shower attachment which you can use at the toilet.