I'm not sure what your budget is, but for the money you'd be better off buying a metal job box (toolbox used on construction sites) and disguising it than getting that safe from Amazon. Not only is that safe a beacon for something you want hidden, it's far too easy to break into. The type of lock they show there is held locked by a spring solenoid, and can be accessed in under 10 seconds (not an exaggeration, I've seen it done.) Even a simplex mechanical lock is superior. If all you need is to keep kids from getting access to your firearms, the amazon one might do, depending on their age and disposition, but I personally wouldn't trust it.
If you want to spend money on a safe, get one that has the best chance of protecting your valuables. You don't have to spend thousands of dollars, but a few hundred for something a bit more robust is a good idea IMO.
This is a solid option.
This is also not bad.
You already seem to understand no safe is perfect and should be kept hidden and be part of a layered security plan, so whatever you decide is up to you.