Using light-colored upholstery in your home can come with a little extra work to keep it clean.
While trying to clean a stain off my ottoman, I actually made it worse by using tap water. Because of minerals in tap water, I was left with a bigger stain!
To remove water stains: first, blot the area with white vinegar. Wait 10 minutes and then blot with distilled water. Let dry.
Here you can see the stain is better but not totally gone. So I repeated the entire process again.
After 3 rounds with the vinegar and distilled water you are no longer able to see the water stain!
I no longer have that ottoman (due to cat claws) but I do have a white sofa I use this same method on. White is easier than off white because bleaching is also an option!