I have two comments about the book:

1) Reading Maya as a philosophy book is a mistake.
It is a romance that brings important philosophical reflections, and leads you deeper into questioning why we are here and whether or not there is a purpose for everything that exists. But it is a love story, a story of many 'loves', that includes philosophy throughout as it would be expected of Gaarder. If you are looking for a philosophy book, I would recommend something else.

2) It was, for me, a very good book, but the timing was wrong.
I believe books speak to us differently depending on which context we are in and how life is at that very moment. My moment in life now was certainly not right for Maya. I needed more closure, and the book brings the opposite. At the end, reality and fiction are mixed and cannot be separated. But for this moment in my life I would have preferred to be told which one was 'true', even if Gaarder would argue that the fictional part was true, no matter how fantastic and absurd it may seem. When I got to the end of the book, I was prepared for that. But I was not prepared to have such a tangled ending.

It is important to say that this does not make it a bad book. It is certainly a very interesting read and I will try to return to it when the time is right.