I heard many great things about MIX prior to going and it definitely exceeded my expectations. First of all the view is amazing! It's the type of amazing a photograph can't capture, you have go up there and see it for yourself. The food was nothing short of excellent. I had the gnocchi for appetizer and the filet with foie gras. I was so happy and full by the end.
The service was also excellent. i went a while back with a group of friends who were still in college. I already knew we were a group of obnoxious students and I could tell the waiter was very frustrated with us, but he patiently endured through the whole time :P By the end I think he was more amused by us than annoyed.