Hi serena
Unfortunately they did not have walk in showers (but you could email and ask if they have any rooms with one). They had a bath, with an overhead shower, and a small bit to sit on, the bottom of the bath was slip free (like sandpaper). My dad is not that steady on his feet, and he said he managed ok.
Hope this helps a bit serena, but I would email them, as they may have rooms with walk in showers.
Belly!