Glass doors look very attractive but bathroom is a private place so either you can have colored opaque glass or stain glass doors.

Bathrooms are exposed to a lot of moisture and hence plastic doors are a good option. They are light weighted and easy to clean and maintain and are available in great designs. As such wooden doors get damaged by water and as you said it’s a small bathroom it will surely get splashes of water.

If it is a small space you can have sliding doors in metal, glass or plastic. This will save space and looks very chic.