Test sample tiles in daylight and in your evening lighting before making final decisions.
Check how much natural light the room gets and whether it is mostly north - facing or south - facing exposure.
Start with the floor tile, then choose wall tile, grout, fixtures, and paint in that order.
Think about cleaning and maintenance, not only colour. Gloss tiles reflect more light but can show marks. Matte finishes feel softer but may need proper cleaning depending on texture.
Dark grout can highlight pattern and shape, but it does not suit every tile layout.
If resale flexibility matters, keep permanent finishes neutral and bring trend colours in with towels, plants, mirrors, and accessories.
If you are planning layout updates too, review bathroom renovation challenges and small bathroom tile choices before committing.