That close to the ground is a recipe for rot, so a stone terrace seems like a better idea.

You are going to do a patio if all one level since the right side does not allow for a deck and the left will require steps down to that level so the stone is pretty much it .There should be aconcrete pad for the hot tub already in place on the right.

Going with rectangular all the way across the back of the house. The hot tub will be on the stone