This Adjoining bathroom floor plan corresponds to a 5' x 8' foot footprint, which is typical of a tiny bathroom in an older home. Consider the size of your little bathroom to acquire an idea of your measurements. For this size, you have two typical alternatives. If the door opens on the 8' side, it can be placed immediately across from the sink. The toilet and sink should be close together, and the shower or tub should be against the 5' wall. Across from the toilet, a towel rack or shelf can be installed. This layout maximizes both space and functionality.