When it comes to bathrooms I've always liked quite spacious rooms, often with tiles, often with a theme and with a soothing feel to it.
I always like it if the bathroom has a luxury feel to it, I also like it when it's simplistic and 'clean' looking probably because you go there to be cleaner so it should match your state of mind. I always try to have very few things on display too. I always wonder why some people have a million bottles of every beauty product possible that they don't even use in their bathroom. It looks messy and also it looks like they need a lot to look good so the feeling of effortlessness in a person immediately goes away if they have a million random products in their bathroom. If people have a few select and very good products in the bathroom it's a different story again. If you have lots of products you can always put them in storage in the bathroom, like in a basket or a press.
Next week I will post from my own bathroom and talk about what I did to it and how to work with what you got.