I took Shin Nihonkai Ferry from Niigata to Hokkaido Japan and tried Deluxe cabin. But the weather was terrible. The ferry was swaying, pitching and rocking heavily during night.
Suite on the sister ship, Lavender
https://youtu.be/Xstspzo6stg
Taking Taiheiyo Ferry in the stormy weather (typhoon)
Ep1
https://youtu.be/OfqLAHvXD6U
Ep2
https://youtu.be/TZISfmhiLBM
Thanks for watching