No two acid stained floors will look alike.  The floors in the Shambala Day Spa were done after patching a floor where carpet had been removed and allowing all the flaws to show through and give the floor  an artsy character.  A floor can  Also be skim coated giving a blank pallet to work on.  An acid stained floor can be made to look like tile or can have free form art work in it.  acid stained floors are extremely durable, stain resistant and very easy to maintain.