None of the staff speaks English which made communication somewhat difficult but the service and atmosphere at Shimofujia was amazing nonetheless. Getting to the location took some effort. I reached out to the Japanican customer service email to schedule transportation to Shimofujia. Took the shinkansen to Nasushiobara station, jumped on a bus from Nasushiobara station to Shiobara onsen bus station and the staff from Shimofujia picked us up from there.
The food was amazing, I would highly recommend the private onsen ( 600 yen per person). I would love to do this again.