Do you mean behind the sink or on the walls? The wall behind the sink looks like a wood veneer or panel, there is a shadow at the edges so that implies it has depth. An architect once told me that wood paneling in a bathroom should be of marine grade to stand up to the moisture. The walls look like a suede paint. I hope that is helpful!

Thanks, that was helpful

This wall-mount faucet is the MEM faucet by Dornbracht. The handle is so beautifully engineered and operates so smoothly. I love the ribbon of water that comes out of the spout as well.

It's called the Waterplane sink and is made by Alape.

They came from a showroom called Zachary at International Market Square in Minneapolis. I'm not sure of the manufacturer.