Guilty about canceling on a sitter, don’t know what to do

I’m the HO, and was going to be away all next week. I booked a house sit with someone a few months ago, but I’ve just broken my leg and will no longer be traveling. It’s less than a week out from the planned sit, and I feel terrible cancelling on the sitter as he lives through THS and would otherwise would not have a place to stay. It’s just a studio so it would not be appropriate for us to both stay here, and I’m already stretching my credit cards with the medical bills, so I can’t afford to put him up someplace else. What can I do?