How can I remove coffee stains from porcelain stoneware?

When a product that causes stains (coffee, olive oil, varnish, etc.) is spilt, this should be cleaned up immediately with a damp cloth. If the product is allowed to dry on the floor, this may cause staining which can only be removed using a product suitable for this purpose.

Link to tables with examples*:

(*) The products of the companies mentioned are merely examples. There are many other companies besides these that have quality products.

How to make a floor plan:

With the help of a tape measure, measure the long side and the short side of your bathroom.
Create a simple drawing and write down the measures.
Also add structures: doors, windows and sanitary items.
If you want you can also add measures for doors and windows and their distance from the wall.
If you want to remove any sanitary ware please mark with an X.
The more information you add, more accurate your bathroom will be.