Yes, The contract was to provide a room at a resort for a specific date, If the owner can’t deliver that...and they can’t,,,because the resort is closed,..then the renter isn’t getting what they paid for,
I am not an attorney, of course, but common understandings from working years ago in a law firm and a general knowledge of contracts and my own life experiences,
Of course, an owner could offer a renter the option to rebook and if the renter wants that option, that could work too,
The hard part in all of this for the renter, however, is getting the owner to do it. But, I am going to assume most owners understand this and will be either rebooking or refunding.