Cancel up to 24 hours before your trip and get a full refund. Cancel within 24 hours of your trip and the first night is non-refundable.
I would like to add that since I first listed this there has been an addition of two dogs, one a very large friendly Yellow Lab named Bear and another, a cranky Chihuahua named Mack. Neither live in the house but they do visit.
You know what I think: Everybody should be happy at least most of the time
In real life, if you can, you should.