We have had both. The smaller shower room fully tiled was fine, but it did have a wall of fitted units with the basin and wc which broke up the tiled ‘cell’ feeling. Very easy to clean.
You have to protect your walls from water so either tiles or other covering. There’s a lot of choice of colours and styles so you can make it anything but clinical. Check google images for inspiration ?
Having a walk in shower replacing my bath and been intending on having it fully tiled. I wonder however whether it will look too clinical. Any suggestions please.