Having read Astrosamantha's account of her 200 days in space, and the detailed operations on the Soyuz capsule and the ISS, events narrated here feel so unreal they can't even be considered "fiction", as one fundamental requisite of fiction is that it must be plausible, sci-fi even more so.
Being more a script than a novel it's definitely going to become a movie, of genre I call "popcorn" for good reason.
Still, I needed to pass a long day on a ship at sea, and in that it was successful...