Fast moving, engrossing, clear style and great characters you learn to care about. I finished it quite quickly since it's a very easy read. However this does not mean straightforward, since the novel twists and turns in quite unexpected directions and when you think you have an idea where it goes next, you are soon confounded.
Also the novel takes place across quite an extended period of time, so we see characters change, grow, children become adults, babies become teenagers and that adds a lot to the depth of the novel in contrast to many series that compress a lifetime worth of events in a short period.
AVOID GLOSSARY. Has spoilers, so if you do need to check something, be careful