Japan solo hiking roadtrip

hey! I am looking to pressure test my plan for Japan.

My trip is supposed to be nature / off-the-beaten trail, but I’ve never been to Japan so want to check if any obvious mistakes or over-commitment.

Sept 10–11 (2 nights)
Tokyo
Onyado Nono Asakusa Bettei

- Shinkansen

Sept 12–13 (2 nights)
Hakodate
Hotel Banso

- Train to Sapporo

Sept 14 (1 night)
Sapporo
Solaria Nishitetsu Hotel Sapporo

- Car rental

Sept 15–16 (2 nights)
Biei / Shirogane
Aoi no Bi Yuyu

Sept 17–18 (2 nights)
Higashikawa / Asahidake
Hotel La Vista Daisetsuzan

Sept 19 (1 night)
Shinhidaka
Shizunai Eclipse Hotel

Sept 20–21 (2 nights)
Lake Shikotsu
Lake Shikotsu Tsuruga Resort Spa Mizu no Uta

Sept 22–23
Flight home