Vulpix wrote:
Best I can do is 5d4n for Tokyo... I really want to spend 1 day at Hakone and stay at one of the onsen hotels. 
Then maybe you stay 1 night at Hakone lor.
You may refer to this website for 2 day 1 night in Hakone.
https://www.odakyu.jp/english/sights...s/hakone_2day/
Or if you don't have time and only have 1 day there, then follow this itinerary.
You can still enjoy the onsen.
https://www.odakyu.jp/english/sights.../hakone-1-day/