Mon Ami Gabi perhaps won't win an award for some of the best food you'll ever have and half the menu items can be a bit pricey. However, it is an overall solid restaurant on the Vegas strip that will get you good food for a relatively good price with a great view.
We made a reservation beforehand easily on OpenTable and seated pretty quickly. Service was relatively friendly (note you're going to need a shirt and shoes I believe) although it took a while for the food to come out interestingly enough.
Make sure to try to either get a patio seat or if it's too hot, the room right by the patio that will still give you an open view of the Bellagio across the street. This room not only will keep you very cool but you'll get a great sight of the awesome Bellagio fountains while you're eating without having to stand and watch.
Food-wise, they have a brunch menu that is relatively cheap along with a regular menu filled with a lot of different items from crepes to steaks (it can get pricey depending on what you get). I had the seafood crepe for about $16 and although it wasn't the best crepe I've ever had, the sauce and the fresh-tasting shrimps/scallops were solid along with a cranberry juice (they had a full drink bar/menu of a lot of items).
So again, if you're in Vegas and want a solid, consistent place with a great view, you can't really go too wrong with Mon Ami Gabi.