It's an interesting idea that you might be able to make some money off. Getting anyone to spend any money on your product is difficult - I would not consider the idea validated, but you know at least a few people have that need. Now you need to figure out if more people have that need and if you can profitably reach them.

Check out indiehackers.com for more info on running these micro businesses. In my personal opinion though, I think this business might be tough to make decent money on. I think there isn't much defensible, and if you get too successful, you will get a hundred competitors over night. But there are many examples to the contrary like the guy who has been running the store locator saas: https://www.indiehackers.com/product/storemapper

Either way, best of luck!