Thumbs down!
Our server was professional and to the point.
Food was disappointing other than the Lasagna. The signature dish, Osso Bucco was tasteless, dry and bland. Pork dish was really sad and not even close to what it should be.
Three members of our party had medium stage food poisoning. (including myself) The common denominator was the $18.00 tomato and Mozzarella salad.
With so many great restaurants in Vegas you really don't need to hit Sinatra's.