Call me a dinosaur, but I like personal checks. Most rentals are done weeks or months in advance, so there isn't a question of whether the check is good (and if it's not, the name on the rental can be changed back). Checks don't cost 3% of the amount transferred. Remember: possession is 90% of the law.
Yes, I have a written contract with a non-cancellation provision (unless the resort is closed) and an admonition to purchase travel insurance -- plus, I am not at the mercy of Square, credit card companies, or RedWeek Full Service.