Although never required in No Glitches Logic, sometimes learning dark rooms will be the difference between single or double dipping a dungeon. In cases where you are racing the seed, this can give you an edge over your opponent. Here's a few maps of dark rooms you may come across that can lead to items in the game. In order to help everyone who is newer to the game, I have edited a couple of maps I had found for use on Ian-Albert.com in order to better assist everyone with finding every possible item location.
While traversing through dark rooms it is recommended to hold out your sword to get the twinkle in order to show your position in the room.
Hyrule Castle and Sewers Dark ROoms
Eastern Palace Dark Rooms
AgANihm's Tower Dark Rooms
Palace of Darkness Dark Rooms
Although the Dark Maze Room looks overwhelming, it actually has a fairly easy pattern to it. Make sure for the top part of the maze, once you move up a bit, you continuously hold left until you are close to the chest (if you hold left all the way to the chest you will need to move right a bit to open the chest). Going to the bottom chest is a bit more challenging but practice a little bit and you can do it!
Misery Mire Dark Rooms
Turtle Rock Dark Room
Old Man Cave
I thank you very much for taking the time to look over this guide. Please leave any questions or comments below if you think I have missed anything or if you have a suggestion for another guide.