This is the 3774th most frequent Spanish word.
recomendado
Recommended.
The word 'recomendado' is used as an adjective to describe the book, indicating that it has been suggested or endorsed by experts.
Este libro es muy recomendado por los expertos.
This book is highly recommended by experts.
In this context, 'recomendado' works as an adjective describing the restaurant, specifying it as one that has been suggested in the guide.
El restaurante recomendado en la guía resultó excelente.
The restaurant recommended in the guide turned out to be excellent.
Here, 'recomendado' is used as part of a verb phrase ('hemos recomendado') in its past participle form to indicate the act of suggesting an action to others.