Other reviewers have covered the basics of this property. This review is for the girls who want to know how much of their bathroom they need to bring with them to the Palazzo. The rooms are pretty well stocked. They come with the following: 2 robes, a Conair 1875 dryer, 3 bath towels (king room), 2 or 3 hand towels, 3 washcloths, shampoo, conditioner, bar soap, body wash, digital scale, shower cap, sewing kit, cotton pads, hair tie, iron, ironing board. The lobby shop has bath bombs and other bath products if you want to soak Vegas out of your skin. They also have basic hair products that are extremely overpriced, even by Vegas standards. Unless you're in a bind, I'd go to Walgreens (on property) or Sephora (over at Venetian) for that.
I've reviewed the Canyon Ranch Spa Club separately.