Backsplashes to Avoid, According to Interior Designers
Choosing the right backsplash for the kitchen is important because it can enhance the room and add to its overall design. There are many colors, materials, and options available, but there are also those that put form over function and should be evaded. Moreover, some materials would make a kitchen look older. So, here are some backsplashes to consider avoiding.
Limestone and Zellige Tile
The soft texture and inviting neutral hue of limestone make it a preferred choice for many designers, but there are also some downsides. Due to its high porosity, limestone retains water, and mildew can quickly appear in its micro-holes. That's why you should only use this material for spaces with lower humidity levels.

As far as zellige tiles, these hand-made Moroccan ceramic tiles look amazing, but their maintenance is tedious. They can be glazed and unglazed, and either way, the very imperfections that make them charming also make them a nightmare to clean.