Promo code D6T8V is good for 30% off and free shipping through January 10 at the W Hotel Store.
For beds and bedding I’d wait until the 40% off and free shipping specific to those items comes around, it seems to several times a year. (Though if you were considering getting a W Hotel bed, and didn’t want to wait, this is still a reasonable offer.)
But for non-bed items, like stocking up on Bliss products, this is the best deal going most of the time. I admit, ever since I started staying at W properties I’ve used Bliss soaps and shampoos at home, and I refill my own supply when 30% off and free shipping comes around.