This shelf makes use of three stone shelves rather than glass. So, which is better? Personally, I like the look of glass. But if a shower niche is getting soaked and taking on soap spray every day, a stone surface will look cleaner longer.Tip: Make sure the bottom of the niche and any shelves are slightly tipped toward the shower so they drain. Shower niches are super useful, but if they hold water after every shower, they won't look great for long.