Use draw.io to draw any diagrams or floor plans. 

I quickly go through how to draw a floor plan and then import it into Microsof Word.
This is an amazing online tool that allows you to draw and create anything from floorplans, electrical diagrams, computer network diagrams, gant charts, venn diagrams.
draw.io
You can also download the desktop app version from github.com/jgr...
It also has a Microsoft Word plugin.