What to do?

I’ve got 3-4 days of my trip after visiting Kyoto,Osaka, and before I head back to Tokyo for three more nights. I was thinking Okinawa but thought maybe I don’t want to eat up a bunch of time with traveling down there for just a couple days. Any suggestions after leaving Osaka heading back towards Tokyo? I was thinking Izu Peninsula.

Please suggest. This will be the end of May.

by Master_Equipment_521