They through in a couple swerves from the book. First Bo being Satine's sister was new, as was Palpatine saying he had a use for Maul. In the book he says he has no use for him as he zaps him with lighting.
Overall I feel like these episodes would have worked better intermingled with the rest of the season. It would have made it seem like Maul ruled Mandalore for more than a week
Duel was fun, though having Maul beg for mercy I feel is really a negative for his character. Vizsla didn't cry and beg but the big tough Sith Lord does, lol.