it got wet it cant be too smooth.
granite or bluestone, because it doesn't have any metals in it. That is what wicks the heat from the sun. Maybe a sandstone/flagstone, like "Tennessee Crab Orchard" is a good way to go. It comes in brown and gray tones (marbleized), also irregular shapes, but I would wet-set it on a slab and probably seal
typically that bluestone,clay brick or concrete pavers. Make sure you are actually getting true Travertine and not something like Jerusalem Limestone for example (which is a softer stone). Also, you can't use the same thickness outside as you would use and pay for inside. Typically, the material you would use
with two sets of steps and beach front entry where hot tub is