The best place for a hot tub is on a pre-poured concrete slab. Placing a hot tub on tile could be a slip-and-fall risk, and putting it on wood could cause surface warping and deterioration. Choose a flat and sturdy location that can hold 3,000 pounds or more, depending on the size of the spa. Your hot tub also needs to be close to a garden hose for occasional refilling and be near an area that allows for easy drainage.