you can join package from ( JR Travel) all JR Station, last year i went to 長野滑雪& hotspring, 你自己去到當地book真係平呀! http://www.travel.eki-net.com/odoroki2006win_niigata/index.asp
(長野が往復JR+宿泊付 10,700円~17,300円)
one package: JR(來回)+one night hotel(溫泉)=about HK$753~1218/person