We very much enjoyed our stay at Hotel Okada, so whatever negative I might list is just for your decision-making.
I really wanted to see Hakone for the scenery, and thought it would be fun to visit an onsen. I was traveling with my adult kids and while some would be ok with a public bath, others of us not so much. So I wanted an in room onsen bath. Hotel Okada was by far the most affordable.
We booked a Japanese style room because it was the only one available (even 7 months in advance) and I was aware it was in an older wing of the hotel. Staff came to set up futon and stow them every day.
Because it was an older room, shortage of outlets was an issue. But otherwise the room was in good repair, and the onsen bath was amazing. It is not an open air bath, but I knew that.
We did not get the dinner plan (it wasn't available on Expedia) and found that there are no restaurants near and taxis aren't easy to get. We ate cup noodles in our room a few nights. It was fine, Hakone was gorgeous.
If you have large luggage get the luggage transport service! The hotel shuttles have no luggage space lol. mendokusai.