Hi! I would like to use a gorgeous limestone in my master bathroom but have heard horror stories about how easy it is to stain the tiles! As a compromise I was going to use the larger piece of lime stone (in the attached photo) in my 6 x 6 bathroom for the area with the toilet and floating vanity and use an urban concrete for the shower as its more durable. The shower is 6 x 3 and will be flush to the limestone with a glass 3/4 of the length and open walk in. I was thinking the grey urban concrete as 2 x 2 tiles at the bottom and the white as 12 x 24 tiles on the three walls. Interested in your thoughts! thanks! erin