Not as enjoyable as Iceland, but kooky and intellectual. I vaguely knew the Parsifal of Arthurian myth, not in detail, but not knowing the myth didn't hinder my reading.
Reading the myth would help though, I think.
Krusoe keeps plot-lines juggled in mid-air, certain phrases recur, chronology is not unlike the little scrawled drawings that show up every 40 pages or so. I liked being able to put the book down for a week, then come back to it and say to myself, "Oh yes, the librarian fetish book."
Fetishes aside, the idea of evil and neglect as casual side effects of a brutal and fiducial world is uniquely handled, in a manner that I could imagine Wes Anderson or Michel Gondry filming. Eccentric, to say the least.
I plan on reading more Krusoe, especially when he rolls out deep thoughts like this one:
"Another reason Parsifal liked libraries so much was that in a library everyone was busy looking at the books and not at him. Likewise, when he looked at a book, it did not look back."