For Hakone (hot springs) stay at Kinnotake Ryokan (Japanese Inn) - the website's here
http://www.kinnotake.com/Best place I've stayed in, bar none, it's beyond five star and will get he SP in a dizzy staight of 'why's LL not asked me to marry him?'



They only have 8 rooms, bit pricey, but you're worth it.. ;)