This is the 2463rd most frequent Russian word.
посоветовал
"Посоветовал" means "advised."
Here, 'посоветовал' is used to indicate giving advice or recommending an action, with 'мне' specifying to whom the advice is directed.
Он посоветовал мне прочитать эту книгу.
He advised me to read this book.
In this sentence, 'посоветовал' demonstrates the act of suggesting an improvement or enhancement, in this case to an academic work.
Учитель посоветовал добавить больше примеров в ответе.
The teacher recommended adding more examples in the answer.
Here, 'посоветовали' (plural form) indicates a suggestion with a positive connotation, implying that the restaurant is worth visiting.