The most common scene we encounter on almost all architectural visualization is the living room and sometimes a dining room. It is not easy to find projects that show private spaces of the house as the bathroom. And speaking of bathrooms, we can quickly state that along with the kitchen those may be the hardest areas to compose for visualization because they are crowded with small objects that must be either modeled or pulled from a library. If you don't have a good amount of those objects, a good deal of time will be used to create all of them.
Do you want to take a look at an excellent bathroom render with Blender and Cycles? An artist called chemsy posted this project at the Blenderartists forums a few months ago, and it is a great example of the composition for a bathroom.