We stayed in Kawaguchiko (河口湖) for 2 nights; one night at Hotel Regina Kawaguchiko, and one night at Kozanteiubuya. Hotel Regina is a perfect hotel for family and it provides a great Mt. Fuji view from the guest rooms, but it is a bit far away from station and the lake.
For the second night, we stayed at Kozanteiubuya. Be honest, we thought it over several times before making the reservation, due to above average price. But after viewing some traveling blogs, we decided to enjoy it as a gift for our 12th wedding anniversary.
Kozanteiubuya occupies the best location in Kawaguchiko area, provides the best views combined with Mt. Fuji and the lake; from each guest room, restaurant, bar, and hot spring bathrooms (outdoor and indoor).
We booked the smallest room on 5th floor with 2 meals (dinner and breakfast) at the cost of JPY52,000 (USD648). Once we stepped in the hotel, we did feel we were well taken cared; from personal check-in, brief of hotel, the quality and service of meals and all the privileges.
The decoration of the guest room is not so luxurious as other hotels we have been to, but the window view and the atmosphere made us feel so relaxing and comfortable. I even did not want to turn on the TV, I just wanted enjoying the amazing view of Mt. Fuji and the lake from everywhere in the hotel.
Kozanteiubuya is a hotel providing tradition Japanese hospitality and giving a really relaxing environment to all the guests. If you visit Kawaguchiko area and have some extra budget, I do recommend you to stay one night at Kozanteiubuya. You will get more than what you pay.