Do you have posts about how to set best picture style on Canon 5D mark II, for interiors or is everything in post production?
First of all the Canon feature that Dario calls Picture Styles is called Picture Controls on Nikon cameras. Both features work generally similar. They give you some control of sharpness, contrast, saturation and color tone of JPEGs, TIFFs, video coloring and what images look like on your LCD screen. If you shoot RAW the picture style/control will "tag" the file with the style but not "bake it in" like it does for JPG and TIFF.
For people that shoot JPG, TIFF or video (and don't want to spend time in post doing color grading) picture styles/controls are something you want to consider. It's possible on both Nikon and Canon DSLRs to create your own picture style/control and may be something you want to do, particularly if you shoot video.
But frankly I think it makes more sense for real estate photographers to shooting stills to shoot RAW and use Lightroom on a large screen to adjust the look you want on your images. The fact is, Lightroom gives you much more control of the image than the picture styles/picture control settings. Picture styles/controls appear simple and crude compared to what you can do with Lightroom.