The glass half full view of that particular example (assuming that one can get over the door ledge) is that you can just sit on the toilet seat and shower yourself there.

Not something that would be possible in most Western Hotels. (Formule 1 Hotels in France perhaps one of the exceptions)

The example I had in mind was this one (It's one of the Nishi Azabu APA Hotel ablution units)
https://www.flickr.com/photos/piresrl/2113031045