@Iluviaporos - I think my ideal bedroom would be based around an artist rather than an ethnic style. I'd like to say Mucha but that could be a little bit too fancy and require specific kinds of furniture. Someone like Monet could be reflected with pastel colors and rounded shapes and a floral theme, for example. Those are all things you could accomplish without making the room too expensive or specific.
Actually I think Van Gogh might be my first choice. A room designed with Starry Night in mind would be lovely without any kind of pretension (if it was done in the right way).