I have a shower in my apartment with a pretty dirty base. I'd love to give it a real good cleaning, I haven't tried much yet, but I think the best strategy would be to determine the material of the base and then learn about cleaning that material.

[![enter image description here][1]][2]
[![enter image description here][3]][4]
[![enter image description here][5]][6]

 * What can I do to determine the material?
 * Does it even matter, is there some kind of cleaning solution I can use no matter that material?


  [1]: https://i.sstatic.net/k4G4mm.jpg
  [2]: https://i.sstatic.net/k4G4m.jpg
  [3]: https://i.sstatic.net/MLEskm.jpg
  [4]: https://i.sstatic.net/MLEsk.jpg
  [5]: https://i.sstatic.net/px92am.jpg
  [6]: https://i.sstatic.net/px92a.jpg