Yes, that seems quite excessive. Someone likely wanted to play it [very] safe given the distance from Idaho to SF. Do you have care established w/ a hospital w/ an ER there? That might be something to point out (and certainly to have done).
The last time Larry was in the hospital, we listened politely to the plan for another few days and declined it, whereupon we were politely discharged in the usual fashion -- without prejudice, you might say. Were I facing the hotel bill you are in the condition you're in, that's what I'd do. "I think we will want to be discharged on Friday, as originally planned, absent any concrete evidence that justifies changing that plan." (You can put that into words that sound like you.)
Without the courage of your conviction, they don't need to justify the change of heart.
Best,
Laurie