The setting of The Golden Unseen is well constructed and described, and the characters are fully fleshed-out and complex. The prose is a bit formal for my taste, but plenty of popular fantasy novels are written this way. If there is such a thing, I'd call this a fantasy of manners, where politeness and decorum reign. It seemed to take a bit for things to get moving, but the arduous treks each member of the family must embark on were different and interesting enough to keep my attention throughout. There are sea voyages, harrowing battles, and a very interesting encounter with the fae.
Overall I enjoyed it well enough, and it has a beautiful cover. This is another book in my group with very few ratings on Goodreads and Amazon, but I think it would appeal to any fan of fairly clean and straightforward epic fantasy.