Evaluate the valence intensity of the following sentence, considering the mental state of the author. Present a score between 0 and 1, where 0 denotes extremely negative and 1 denotes extremely positive.
Sentence: Its scenes and sensibility are all more than familiar , but it exudes a kind of nostalgic spy-movie charm and , at the same time , is so fresh and free of the usual thriller nonsense that it all seems to be happening for the first time .