The best way to leave a review for restaurants is by using the 'Visited' feature represented by a checkmark on each restaurant. Once you mark this, a quick set of questions will be presented for you including what you liked about the restaurant, what your favorite dishes were and any additional comments you would like the inspectors to know or consider.
We know people like to visit the same places often so once a restaurant, or hotel, is in your visited list you can leave as many reviews as you like from there. Places are only as good as your last visit!