“Stylish” thrillers to get lost in?

I am looking for a book to get sucked away into. Ideally it is something in a non-United States setting involving spies, conspiracy or something similar? I am kind of looking for the book equivalent of Black Butterflies, White Lotus, 70’s Giallo films. I also love fantasy/surrealist elements (I loved The Seven Moons of Maali Almeida).

Ideally it is a well written novel and not a pulp fiction piece, but I am also open to some fun easy reads.