What is the raised area around a large jacuzzi called?

I need two words to describe areas in the house (we are selling and need to advertise). One-the area in front of a fireplace on the floor (not the hearth). The carpet was burned by embers, so I replaced that portion with stone tiles. Is there a special name for the floor in front of a fireplace?

And the second- we have a large 2-person jacuzzi tub. The tub is not sunken, but surrounding it is a raised area (raised to the level of the top of the tub), tiled in shiny indigo. It a place to sit while drying off, or sit and talk to someone in the tub...it makes the tub look sunken, since this raised area is about 3-4 feet out from the tub. Is there a special name for this raised and tiled area?

Thank you so much if you can help- Besides the points, I'll be more than happy to answer any question you have on medical or scientific matters!