Early Feb 2018
The service, the Food, the helpful friendly staff and the rooms are as good as Hakkoda. The choice of Onsen even better.
There is one issue which my wife didn't appreciate very much and this is the shuttle service to and from the ski slopes. It didn't bother me but she would have liked at least one additional service in between. This might become a big criteria for our next trip.
Early Feb 2018
Semi Onsen was very nice. The staff were welcoming and it was great having a choice of 2 onsens, including outside onsen. The food was also very good. Good wifi and nice Japanese style room. The free shuttle service to Geto Kogen was also appreciated.
I would recommend to westerners to stay during the week as I think Semi Onsen, Kitakami and Geto Kogen are very popular with the Japanese on Fri and Sat nights.
Early Feb 2018
I am back from Japan.  My 3 days at Geto & Semi Onsen were perfect. 
Thanks for your help.

Late December 2017
Japan Snow Accommodation hooked me up last minute with 2 days of skiing at Geto and 2 nights accommodations at Semi Onsen Ryokan. Semi Onsen was excellent!  The staff was incredibly friendly and helpful.  They have shuttle service to/from mountain.  Kaiseki dinner and breakfast were one of best I've had while staying at any traditional Ryokan in Japan.  Lastly, the Onsens at Semi are worth the trip alone.  If you are going to Geto Kogen highly recommend staying at Semi Onsen!  Thanks to Hisae at Japan Snow Accommodation and Semi Onsen Ryokan for a great trip.
Mid Feb 2017
We enjoyed the Skiing but the Semi Onsen  was fabulous. The staff looked after our every need and they were delightful the best Japanese experience. If they wish to improve on an already great experience adding a dedicated shuttle bus with a bit more flexibility would make just that much better.Would most certainly go back.Thank you for the work you put in to make that happen.
Kind regards 
Kay and Robert Davidsn
Late January 2017
It was our first time staying at a ryokan and we loved  the Japanese experience at Semi Onsen. The rotenburo was my favourite and was simply beautiful. Often, I had it all to myself. The local ladies and other Japanese visitors who visited the onsen were so friendly, that I finally got some much needed Japanese practice.  We stayed in a western twin room that was immaculately clean, quite spacious and comfortable. The staff were very accommodating and helpful. The meals were Japanese style with many, many beautifully prepared, delicious courses.
Janne McKay
Mid January 2017
Geto has been amazing and I think the best powder day I've ever had. Great mountain and great accom with the food a real highlight. Can you please pass on our thanks to the wonderful staff that have taken care of us at Semi Onsen. They are so nice and our stay has been beautiful.