FYI, Hanna Suzuki is a prolific ryokan reviewer who has probably forgot more of her ryokan stays than ryokans I've ever visited. Her site has a wealth of detailed information on a huge variety of properties:

https://luxuryhotelkyoto.com/

Don't let the URL fool you; the site covers a large swath of the country. It's not the easiest place to navigate, and the search function does not work property, but it's well worth browsing her site - it's extremely informative, and she does it simply to provide insight on her experiences on the hundreds of ryokans she's visited.

P.S. - I was recently chatting with her, comparing notes on our recent stays, when she remarked how visitor numbers to her website had plummeted during COVID (not a surprise), but was bummed that things hadn't picked up after Japan opened up, and her motivation to keep it updated was waning. If you have any interest in staying at some of Japan's most unique properties, I would like to encourage you to pay her site a visit to support her efforts.