The things I like sharing the most on Google Maps is giving my opinion (a review) from my very perspective from a place. I like doing it because my point of view could help many other people that share the same or similar conditions as I have already beneficiate from the same when I open Gooogle Maps and read some reviews about a place with the information is relevant for me. I also like sharing pictures, because with the pictures you get a better idea of what to expect in this place and in what way.
For me it is very important that places such as restaurant offer a good taste in the food they offer, offer good service, are economically affordable for almost everyone, have a hygienic area for eating and have good facilities like toilets and water basins for washing your hands. This is why every time I have the chance I comment about these details.