i bet you couldn't feel a pea under that
The hotel we're staying at in Fort Lauderdale has something called "Heavenly Beds" in each room: "The all-white, 10-layer bed includes a custom-designed, pillowtop mattress, a down blanket, and a down comforter, all topped by five queen- and king-size pillows." No actual room for any human beings, but man, that'll be one comfy bed.
Apparently, "The Westin Heavenly Dog Bed" is also available. That would last approximately 7 seconds with ours.