The awesome Lisa in Japan visited one in Gunma not long ago:
https://www.instagram.com/p/CamZ_dhvuQd/
She also took some great photos of the iconic Nakagin Capsule Tower - which sadly may be gone by the time they let tourists back into Japan… 
:
https://www.instagram.com/p/CYSUVlZBMH2/
ETA: just watched the preview vid for the new one, must agree with this:
