This Hidden Storage Cabinet Is the Smartest Thing Ive Put in My Small Bathroom

My bathroom is a strange place. It has two showers (yes, really) and, naturally, one toilet. I have under-sink storage, and technically the bathroom mirror opens up to what should be a shelved medicine cabinet - except there are no shelves in the medicine cabinet at all. Its just empty space.As such, and because my bathroom is on the smaller side, I need more storage in my bathroom, always.