Piranesi by Susanna Clarke

You might call this a literary low fantasy, but does that sound adequately exciting? Piranesi is the nickname of our protagonist in this story. While a victim to some level of reality distortion, he lives a life of its own substance, exploring and documenting the endless labyrinth where he lives. He calls it The House, beautiful and so immersive that we begin to understand how Piranesi could have forgotten about everything outside.

The story hints at a lot of philosophy regarding the use of intuition in opposition to modern, rational thought. Piranesi doesn't have to think about who he is or what he needs to do. The world tells him what to do, and he is constantly listening and learning, sipping from an endless stream of natural dopamine.

At less than three hundred pages, you could read this book in a day or two. So why not? It's not without its villains, but to tell you anything about them would spoil it.