Blackstone: The Blackstone Hotel by Damien Thorn
The Blackstone Hotel is a paranormal/horror novel inspired by the Overlook Hotel.
The year is 1919 and Wilfred Elliot has recently lost his wife under mysterious circumstances and he's taking it hard. He finds something among her possessions that suggests she had a secret life. He becomes obsessed with unravelling the mystery of that life and of her unexpected and suspicious death. In order to reclaim his sense of sanity, he books two weeks at the Blackstone Hotel, located high in the Rocky Mountains.
His life will never be the same.
Gothic, Lovecraft, King, but easy to read.