I love Martha Wells' books (that I've read). After reading some of Murderbot diaries, I found out she has been writing in the fantasy genre for long, and I picked up two, 'Death of the necromancer' and this one. Both are stand-alone, however City of bones seems to be set in the world (in the past, or in the future, I'm not sure) of her Raksura series. This is not a typical fantasy series, there are no humans (I think..) and the characters are not typical fantasy races, or even similar to any I've seen, and the author makes full use of the anatomical and other differences, which was pretty interesting. Overall pretty unique and fun book.