5 Days 4 Night 軽井沢 + 長野?

I'm going to Japan in late Dec.

I will stay in 軽井沢 for 2 nights, now can't decide where to go after that. I think 上高地 will be too cold to go in late Dec? I see all guesthouses are closed during Dec and Jan.

Where else is worth a visit?

Thank you very much!

建議可以去草津溫泉，他是日本三大名泉之一，離輕井澤又很近（沒記錯的話應該是一小時車程），而且草津溫泉鄉也瀰漫著濃濃的古味....冬天泡起溫泉來一定特別溫暖！

軽井沢町 http://www.town.karuizawa.nagano.jp/
軽井沢町観光情報 http://www.town.karuizawa.nagano.jp/toppage_s.asp

長野縣觀光旅遊資訊 http://www.nagano-tabi.net/chinese/

上高地冬天封山不開放，而且離輕井澤非常遠
草津溫泉一般都是與輕井澤合在一起旅遊的

Thank you so much!!!

I will go to 草津溫泉 then(H)

Any recommendation on accomodation? My budget is around YEN$10000/person with 2 meals.