V has recently been struck by a type of flooring called baldosas hidraulicas, which looks similar to encaustic tile, but is made from colored compressed cement. The pigment goes all the way through, which makes it durable, and they´re traditionally polished with a wax.
They are occasionally available recovered from demolition, and there are a couple of places which still make them in an endless variety of patterns.
For a kitchen or bath, I can see them as a beautiful, practical option. I worry about them being cold in a Galician climate. I also worry about committing to a pattern. It would be a little like choosing a tattoo - difficult to change your mind later. As Tim Gunn would say - it´s a whole lotta look.
I´m not sure I wouldn´t prefer plain slate for the long term or maybe a nice, off-white, octagonal mosaic.