The world of Robert Eggers’s Nosferatu isn’t exactly a good time. Children get eaten, the fictional port city of Wisberg becomes overwhelmed by a plague, and a local property broker imports a carnal immortal being that’ll usher in death for just about everybody. Rough! Also, it’s cold and dark all the time, even when the sun is up. And yet, despite Nosferatu’s irrepressible gloom, there’s something undeniably … cozy about Eggers’s 19th-century Central Europe.