Non slip wet room flooring

[LtheWife]

We're about to move into a house that has a wet room with the kind of non slip flooring installed by councils (Altro?). Longer term I'd like to put a walk in enclosure and floor tiles in, but in the meantime I'm wondering how I'm supposed to keep it clean. It has a really rough finish to it and I'm imagining mops would just stick like velcro and rubber brooms impossible to sweep across the floor. Am I going to have to get down on my hands and knees and scrub?

How did you get on with this? I have altro flooring in my wet room toilet and the dirt is there because of people wearing shoes. I was on my hands and knees scrubbing tonight and I still can't shift the dirt. Around the edges and in the actual shower part it is perfectly clean. Why can't I get the whole floor that bright blue colour?!