I dropped into Gartine today just to check it out, not least as I am usually sceptical about a restaurant that is rated so highly. I was first asked if I had a reservation, these are necessary, but I didn't. The very kind owner found me a table anyway, and I was made to feel completely welcome.
The menu is simple, but surprisingly good. I had a smoked salmon turin with brown bread and salad. I also though I should try the owner's home recipe chai. The salmon came quickly as did the chai. To say that both were fantastic does them both an injustice. The salmon in particular was brilliant.
The portions at Gartine are not huge, but then neither are the prices. I will be back, as often as I can, and I would recommend that you go too.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.