Mandarin Oriental is Vienna's newest luxury hotel, but already it has the making of being the top C-suite hangout. It's got so much style. The building, for a start.

At ravishingly-beautiful Mandarin Oriental Vienna, eating and drinking, all designed by a French company, Humbert & Poyet, is in Atelier 7, the glassed-over central courtyard of what is an all-white building rising six floors above ground – see above.