This is the 5620th most frequent Japanese word.
さながら
"さながら" means "just like" or "as if."
In this sentence, 'さながら' is used to compare the person's acting to that of a professional actor, signifying similarity.
彼の演技はまるでプロの俳優さながらだった。
His acting was just like that of a professional actor.
Here, 'さながら' is used metaphorically to convey the stunning resemblance of the scenery to an idealized image of heaven.
美しい景色はまさに天国さながらでした。
The beautiful scenery was as if it were heaven.
In this sentence, 'さながら' emphasizes the comparison of her behavior to that stereotypically associated with a princess.