Timber will give a warmth to the space, but i'm not sure about the maintenance

Timber creates a homey feel while being nice on your feet no matter the weather. It just a little harder to clean unless you have the right coating applied.

Recommend you use the wood like tiles as the bathroom is a high humidity area and timber will require more maintenance unless you are willing o spend a lot on the more "hardy" wood. Take note that bare cement finish look good when new but may have moss and not so good after a few years. The good thing though is that you can paint over it :)

after watching my daughter and her husband agonize over the way their expensive timber floor has not held up well after 3 years, I would recommend tiles/wood look tiles with under heating. Their beautiful warm expensive floor looks like it always needs a clean and polish, not from neglect, they have cared for it well. One of the boards now has a slight and painful moan when it's stepped on :-( I grew up in a completely wood floor home and although it looked wonderful, my Mother hated it. ....and the mats !

Wood is a lot harder to maintain than tiles ,(no matter what the die hards say) the modern wood finishes are much better than they used to be.... But a piece of wood is rather arty no matter what it's used for and it does demand to be loved and cared for.....and if something goes wrong it's a lot more expensive to fix than sand and cement. Ultimately you have to be happy. BTW underheating tiles is warmer than timber :-)

Maybe concrete looking tiles not wood for functionality. Add industrial/contemporary wooden elements in say the cabinets fittings and a wooden stool for example.

Timber flooring : ) Much warmer and friendlier on the feet. We have oak flooring throughout, except in the powder room and laundry, in which we have polished porcelain tiles. It's a marked difference between the two flooring materials. On the above suggestion of tiles that look like timber.......................................no!