So on my first visit to Tokyo about 15 years ago, I used the men's room inside the Keisei Ueno train station and was not overly impressed. I recall looking into one of the toilet rooms and saw rust and general disgust.
Later I saw the exact same toilet image on a website for "world's worst restrooms"! haha
So I used the same restroom 2 weeks ago and it has improved a bit.
But the shocker was when I chose to use the public men's room OUTSIDE the Keisei Ueno station... GROSS! VERY WET FLOOR, HAD TO HOLD MY BREATH, TOO! Stunk of intense 100 year old urine. I thought that I was back in Taiwan or China!
So not all restrooms in Japan are trophy winners!