Not sure about you, but I find buying a mattress to be a daunting experience. I found Haven's Rejuvenate to be a great memory foam choice for your vacation rental. Reasonably priced for this high level of quality.
The (Canadian) manufacturer guarantees satisfaction. 100 nights or 100% refund.
"Free Shipping and Returns"
After comparing in stores, this is a great buy. Comparable specs sell for over $3000.