Like some other places close to Tokyo, this is a site that books up fast. But if you manage to get a last minute trip through a travel agency like JTB you can score some really rockin' deals. The onsens in this area are fabulous and you can enjoy the quirky onsens that keep Japan in the news globally: the red wine, green tea, and coffee baths you sometimes hear of are located in this area. Beautiful of Mt. Fuji from here as well.