(That’s again somekind of vague like in the sims or architectural render… just a random found here on BA: Bathroom )… and you don’t want every tile having the same texture… I think it’s best to search for: blender 3D bathroom tiles or something like that to have a look at some of the tutorials out there or/and look at blenderswap.com for example this one https://blendswap.com/blend/24021 (or any other) just to have a look at the setup… (if you wanna learn and not just use…)