Back to Hakone Gora Karaku - since it just newly opened during the pandemic, you're unlikely to find too many people that have stayed there. While 70 rooms makes it a substantial property, and intimate service is probably out of the question, it does offer some options (such as Teppanyaki) and various rental Onsen baths. I doubt you'll have a bad stay there, at least hard product wise. What puts me off about this place is the lack of Suite-type accommodations, but what's important to you may differ from our needs.

I noticed that Gora Kadan has one room available on 11/26. It's the Standard, Type C room, which is about the same size as a room at Gora Karaku.

Ochiaiso also has availability on that date. We stayed there a long time ago and was quite dated, but it was recently refurbished so you might want to consider it as well.