The Hole in the Wall

Omiros Skarlatos has lived all of his thirty-odd years in a small village in mountainous northern Greece, when, one day, a seemingly unassuming call by the family lawyer informed him that he was the closest relative to his recently deceased uncle. Vasilis Skarlatos had been something of a black sheep in the family, the only one among dozens of uncles and aunts in the complicated Skarlatos family tree that had chosen to live in the capital.
The inheritance was an apartment in the heart of Athens, in a horrible state. Uncle Vasilis had gone crazy the last few years of his life, after a mysterious "accident" that left him wheelchair bound, rambling about his bizarre delusions and acting rude to everyone, even the people who cared for him, so the apartment had gone to seed, right out of a hoarder TV show. Omiros, hating life in the ugly, crowded, and loud capital city, decided to clean it up to rent or sell it as soon as possible, then return to his normal life.
And then, he found a hole in the wall. And through it, he could see into a room that shouldn't exist.