You have free shuttle from odawara? Is it possible to send my luggage back with the shuttle back to the hotel in the morning while I tour around hakone and come back in the evening to check in
They do have the shuttle from Odawara to the hotel. I think you could ask them to help for that. You can just only ask from their e-mail (e-concierge) that provided on their website, they answer quite fast! Also, you may ask the time for the shuttle as the time I went, they had only 3 times a day.
We had our baggage sent directly to the hotel from Tokyo so my only suggestion is to check with the hotel.
Suggest you contact hotel reception.
Get an answer from Hyatt Regency Hakone Resort and Spa staff and past guests.