[pezezin]

Of the stations that you mention, I find Akihabara to be actually quite nice and reasonably well organized (for Japanese standards).

But I agree with you that the others are a mess. Shibuya and Ueno look like half the stations are falling apart, and Shinjuku is some kind of non-euclidean labyrinth, every time I go there, I get lost. If there is even a fire there, the death toll is going to be immense.

[nox101]

Akihabara, there are new and old parts of the station. The new part (lower level) are relatively clean. The old parts (upper level, Sobu-sen) are less clean (unless they've been renewed - I haven't been up in a 2-3 years)

[pezezin]

Mmm, I was there three months ago but I don't remember clearly. I will visit again in two weeks, so I will check it.