I was on a week long vacation on the strip and this is one of the first restaurants I wandered into and tried. Let me preface this by saying that you need money to dine here, but I think its so worth it.
The ambiance is great and the service is excellent. The menu is on the pricey side and the portions are small, but this is to be expected for a high-end restaurant on the strip. With that said, I absolutely loved my experience at Bar Masa.
I highly recommend the Peking Duck with Foie Gras! Amazing! They come in 4 little taco-like servings, but are absolutely a party in your mouth! Amongst the other dishes we tried, the Peking Duck was the shining star. We also tried their granny smith/jicama/nori salad which at first sounded like a weird combo but was surprisingly amazing!
If you have the money to spend, I recommend! I would definitely come here again!