Your master bathroom will be a key location in your home, so you'll want to explore the full range of master bathroom layouts before deciding which one is right for you.
Master bathrooms often come with their own set of distinct design considerations, particularly if they're located inside or adjacent to a master bedroom. In this case, the master bathroom will likely need to mirror or at least emulate the design of the master bedroom. This is by no means a requirement, but a severe stylistic departure may create too much "visual noise" in a space that's meant to be soothing and elegant.
One of the chief considerations for master bathroom layout is the size and location of the tub and shower. A common mistake in master bathroom design is to choose a tub or shower that's either too big or too small. Be sure to very carefully measure your space and estimate what size bathing space it can accommodate, as well as your own preferences. For instance, you might ask yourself whether a tub is essential in combination with a shower, or if you would prefer a larger "walk in" shower with more.
If a tub is definitely in the plans and space isn't an issue, consider a whirlpool or standalone tub in the center of the bathroom as a focal point.
When choosing double sinks, think hard about the amount of space that all of the users will need to both move freely when in the bathroom at the same time, and to store accessories.
Finally, if possible, install the toilet in a separate water closet enclosure within the master bathroom for enhanced privacy.
Explore the different types of bathroom layouts, and determine which layout is best for your bathroom space.
Bathrooms by Professionals(at Pro Galleries)
Bathrooms by People Like You (at Rate My Remodel)