We did a matte tile in a house we built - a dark color. I loved how it looked and felt, but it was indeed a nightmare to maintain. Every little bit of soap scum, hard water, shampoo, etc. showed. It was a total nightmare and i will NEVER do it again. we knew we were going to have to sell the house shortly after moving in, so we were trying to keep everything looking “like new”. I’m kind of a domestic disaster, but I ended up making my own cleaning spray to keep the shower looking good. It is absolutely not ever the type of thing I would do, but it was the only way to keep the Matte tile looking OK. I’m talking every shower spritzing it with some sort of lemon juice, tea tree oil spray.