For each area, rate how much you liked it on a scale from 1-10. I would suggest you use a mixture of difficulty, aesthetics, the enemies within, the lore, etc. to determine your score, but it is entirely up to you!
If you are confused about the way the areas are divided, check this page on the Fextralife wiki:
https://sekiroshadowsdietwice.wiki.fextralife.com/LocationsI'll use this data to develop a video around the community's rankings of Sekiro areas. Thank you to anyone who takes the time to respond!