This is the 305th most frequent Japanese word.
オススメ
Recommendation.
In this sentence, 'オススメ' is used as a noun derived from the verb 'おすすめする' (to recommend), where it is used as part of a phrase to suggest the book to someone else.
この本はとても面白いので、あなたにオススメします。
This book is very interesting, so I recommend it to you.
Here, 'オススメ' is again used as a noun but in a more passive structure, indicating that the quality of the restaurant is recommended by others.
新しいレストランがオープンしました。料理が美味しいとオススメされています。
A new restaurant has opened. It is recommended for its delicious food.
In this context, 'オススメポイント' means 'recommended points,' showing a compound usage, combining 'オススメ' with 'ポイント' to specifically characterize aspects or features that are recommended.