Do you have any floorplans or photos of the space? What would you say your style is? Modern, traditional, rustic, industrial, transitional (majority of people). My advice to you would be to go through Houzz and start looking for photos you like, create an idea book, then get someone else like a designer or even a friend to look through it and help you see the trends you like.

As for colors, white doesn't have to be a cold color, you can pick a nice warm and add grays and browns with your tile selections and that looks very nice!

Here's some finished work to get your creative juices flowing, good luck!

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I always have white cabinets in my baths, except for my powder room which has a darker wood & dark walls. White cabinets in baths are classic & clean looking. I warm it up via wall color & floors. But I always have white towels :)