We were very happy with our choice of hotel in Kawaguciko. As a family of 3 with a 3yo we needed some space and comfort and that's exactly what Shiki No Yado Mt Fuji provided.
Our mixed Western-Japanese style room was large and homely, with a stunning view over Fujiyama. The hotel provides free pick-up from and drop-off to the train station at certain hours, which was convenient. The onsen facility is also great, with a hot pool, a sauna and a couple of devices for foot and leg massage. Breakfast was not included but you can have it for a little extra (¥500 pp I think), but we didn't use it.
You can have a nice walk around the lake or you can catch one of the tourist buses (green or red lines) to explore the area; the bust stop is exactly in front of the hotel.
Some of the staff speak good English - while I speak hyperbasic Japanese - so communication was also easy.
We definitely recommend this hotel and we would stay again on our next trip to the Fuji Five Lakes.