Solid parquet flooring in a bathroom?

Yes of course! Parquet is definitely a suitable floor for the bathroom! 

In the picture, a solid oak parquet has been laid, which, in addition to teak, is one of the most commonly used tree species for this type of floor 

The floor can be laid in the classic way, as in the picture, or in the "nautic" way, where the gaps between the planks are filled with grout. Divine!

These are nature-friendly floors that offer pleasant barefoot walking and do not slip.