This is my second book by Eco. I have also read Foucault's Pendulum and Eco is a reliable, excellent author. The idea of setting a book in a medieval monastery and making it a murder mystery in order to explore philosophical ideas, especially ones about meaning and epistemology is brilliant.
He writes well, albeit not extraordinarily well, and he is after Borges the most ingenious writer ever. There is something academic about the book and it is not really a passionate work, apart for its passion for books and ideas.
It does not force a view down your throat and Eco is very clever and incredibly well read. He can completely inhabit the mind of a scholastic monk in an extraordinarily impressive way.
But the book is your cool professor that you can go for a beer with and have them blow your mind. The book is not your passionate lover.