This was a very good read! As someone who loved Six of Crows, I was excited to read the sequel. The characterization in this book is amazing and definitely fleshed out the characters from before. The plot felt slightly convoluted, but these are the Crows- I don't know what I was expecting. ;)
My only other piece of criticism is that this book may contain spoilers for the Shadow and Bone series, but I haven't read them yet, so I can't truly confirm. Be warned.