My thought on Urashiman is that it's worth seeing if, and only if, you're a fan of Irresponsible Captain Tylor - because if you can't appreciate that, you won't appreciate this. Like Tylor, this is a parody comedy based on tropes of the period, but it's simply not as good as Kouichi Mashimo's later work and very inconsistent between episodes. The only episode really that stood out to me is #32, which has a 3 minute sequence with the best callbacks to the silent film era I've ever seen in anime: they managed to reference at least 11 specific Chaplin, Keaton, and Keystone Cops momentsall mixed together brilliantly.