The location and views - spectacular! Was very lucky to get very clear views of Mt Fuji on my first full day there. I also booked in for a spa session and while expensive, was worth every cent. The staff of the hotel were extremely professional, friendly and efficient and spoke adequate English.
The rooms were very spacious, however being an old hotel, the walls are not very soundproofed and on my second/last night I was able to hear the people in the room next door very profoundly. While this is by no means the hotel's fault, I think it is worth mentioning. I ate my two breakfasts and a dinner at the French restaurant there and cannot fault the staff for their professionalism of service. The free shuttle from the town centre (Motohakone) to the hotel is a particular plus - not that the distance to walk is far but with luggage, in the dark or bad weather it is hugely convenient! Would have been nice if there was free bottled water in the room though. Would stay here again.