Review for Bellagio Review For Petrossian Bar Google User Jan 23 '19 at 8:34 The Petrossian Bar is a great place to take a break and an excellent perch for people watching. The drinks and snacks are unbelievably good and they go down so easy while listening to the live piano. If you are lucky you will get to hear David Osborne play. He is a great concert pianist and he is from Oklahoma so you know he's good people. Stop and say hello he's a really nice guy. Try the espresso martini, its awesome! View full site to comment or like