Izu
The coast trip: ocean on one side, onsen on the other. I stayed down in Imaihama — beach in front of you, bath after.
Full guide coming soon
Full guide coming soon
By Jenner: I have actually done this trip. The full guide is coming soon, written up from my own notes — what is below is the preview.

What it is
The east coast runs Ito to Shimoda — Jogasaki's lava cliffs, Mt. Omuro's grass cone, and more seaside ryokan than you can soak in one weekend.
The one-day outline
Down the east coast with stops — cliffs and a coastal walk, seafood lunch, a night in an onsen town, the long way home via the west coast if the weather's good.
Field notes
Notes by Jenner, from places I have actually been. More notes are on the way — the full guide is coming soon.
Down in Imaihama — beach in front of you.
An ocean-view open-air bath after the beach.