Unglazed tiles in the bathroom?

For our cottage at Lake Balaton in Hungary we wanted a rustic look, so we went with Sima Ceramiche Gres Rosso unglazed stoneware tiles, size 10x20cm.  In the States I think these would be called Quarry Tiles.  In Central Europe usually they are called clinker.  In France I think this is roughly the same as tomette.

Now I know there's some debate about whether or not to use unglazed tiles in the bathroom.  I like how it looks so far, but I'll try to keep you posted regarding maintenance.

This is after I removed all residue with Mellerud Cement Streak Remover and treated the tiles with Sopro “klinkeröl” (Clinker Oil in English, which is "fine mineral oil" with additives).

The walls are the local Hungarian-made Zalakerámia white matt, 15x15cm. The sink and toilet are from the Polish manufacturer Koło. Pretty plain stuff, but we like it.