I think you just stumbled upon a one-off. I've lived here my entire adult life and never encountered this.
replyWhere? 11 years living in Japan and I've never seen this once, and never heard it from friends or family.
replyIt was in Tokyo. Couldn't tell you the specific hotel. But it had our event coordinator livid and she simply ignored them.
replyNot that I don't believe you, but don't take that to be a common occurrence in Japan at all. By and large, Japan is a safe haven of clean and comfortable public restrooms. There are always exceptions, of course.
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