On the one hand, I didn't enjoy the main story that much. I wouldn't say it's boring, it just didn't grab me I guess. On the other hand, the writing/prose is quite good, and there were parts I did quite enjoy. I did like the core idea, and the setting is interesting and well-constructed. There are a couple of "lore dumps" in particular that were my favorite parts of the book.
I remember hearing someone say about some other book something along the lines of "I admire it more than I enjoyed it," and I think that somewhat fits my feelings here. I wouldn't go so far as to say I didn't like it, but I wouldn't call it a favorite either. That said, I find it hard to give it just an average rating, as it was so well-written.