While I never got the opportunity to use this service, they did charge me for it. I requested a refund over a week before my vacation and they refused it. After several angry emails, they said I could fill out a 'credit card authorization form' and they would refund me. I filled out the form and returned it. Once they received the form, they said they couldn't refund me because I had booked the service through some fictitious booking service (of their own invention) which I had never heard of.
Their representation of 'easy cancellation' is absolutely fraudulent.
If there is any chance you won't arrive on the correct date (like if your Grandmother is in the hospital) don't pay for this service. They WILL NOT issue a refund for ANY reason.