[dba-Tech] Drawing Program

Dear List:
 
We're contemplating a bathroom remodel.  I drew the existing bathroom on
some graph paper.
 
Now I'd like to lay out 4-5 different ideas.  So I'm looking for some
software that would make it easy to do a few simple shapes, move them
around, rotate them.  It's mostly rectangles at right angles - need a couple
ovals for the loo and sinks.  
 
My first thought was Word - use the drawing feature.  Might be the easiest
thing.
 
Or Access - report design but no data - just boxes.  
 
Is there anything else simple that anybody can suggest - preferably
something that's already hiding on my computer?
 
TIA
 
Rocky