Wonderful experience!
We sat inside away from the open store front and felt like we were somewhere other than the Forum Shops. We shared the arugula salad and it was a great starter. I had the duck breast for my main entree and I was very impressed. The duck was perfectly complimented by the sides and sauce! My husband ordered the sea bass (one of his fave foods) and he was very happy with his selection.
I recommend Spago for a nice date in Vegas or a big group outing. Just be aware it is pricey.