Thanks for the critique guys, i'll take it all into consideration. I'm going to try vertex painting and changing the floor a bit following your advice Kernersvillain; also that environment is really cool :) Gonna try fixing up the toilets too, so thanks for the critique :)
You should check out the Reflection Subway map that I did for UE4. It has a floor material all set up to vert paint water on there that should help you out. It looks like your tiles are getting odd reflections, and also you can see your point light reflecting in the mirror ;p You can fix that by taking down the roughness…