Definitely, the Ritz Carleton in Chicago.  .  . a place I always take my friends to as we tour the city.  Just getting off the crystal-chandeliered elevator into the hotel lobby in Water Tower Place in Chicago is wonderful.  With the gorgeous fountain - like I have seen no where else - and then down the long corridor banked with comfortable sofas and wall hangings - and voila! in a half-hidden side space you walk into the ladies room.  . which is actually two rooms.  The first, like an Arabian circular tented room banked with individual mirrors for refreshing makeup … and then each toilet stall is has a louvered door to the floor with space inside - not crammed.  Hand towels are piled by the sinks with the entire result sheer luxury.  Rest assured that long after "the visit" it remains solidly in the mind — for this, ladies, is "living" and aren’t we worth it?????    Joan

The one that is close by when I need one! Oh, that I could always be near a hospital, as they usually have the cleanest toilets due to disinfectants. I think women are particularly concerned about finding clean bathrooms, and some women want clean bathrooms with changing stations. Public bathrooms seems to generate feelings of anxiety, fear and disgust. Public bathrooms may contain several kinds of harmful bacteria, such as E. coli, salmonella, coliform, rotavirus, cold virus and staph. However, we are more likely to pick these bugs up by touching things with our hands, rather than our behinds. Although I personally never touch a public toilet seat. Ever. Or a door or a sink or anything in a public bathroom. In general, washing your hands is the most effective thing you can do to prevent bacterial infections from a public restroom. You can remove all gastrointestinal and respiratory infection bacteria by hand washing. Use lots of soap, and rub your hands for 30 seconds at least. In between the fingers, finger nails, etc. Use lots of friction. And don’t let your purse or other belongings touch the floor. Ever. The highest concentration of germs in a public bathroom are on the floor, the sink, and water taps. Never place your handbag on the floor. You don’t want to know about the fecal bacteria you can get on the bottom of your handbag from doing that. And avoid the middle stall of a public restroom. It usually has the most bacteria, as people use it the most. The first stall will probably be cleaner. And don’t hold back. It’s better to empty your bladder, and avoid developing a urinary infection, than being afraid to use a public restroom. Just be careful. Don’t touch anything. And wash your hands.            

Here’s a link re a public bathroom experience we have probably all had at one time or another.  

http://www.uoaa.org/forum/viewtopic.php?f=14&t=13101