The terrace at the Hôtel Suisse-Majestic, 45 avenue des Alpes (directly across from the train station). +41 21 966 33 33. The prices are not bad, and the view superb. There's a saxophonist who plays along to some kind of super drum machine during the early evening hours, and he's pretty good. Even if you're not normally into the sort of music he plays (smooth jazz) you'll have to admit that it works in this environment.
