The Fünf Höfe ("Five Courts") are high class shopping passages in the heart of Munich. The area, designed by the swiss architects Herzog&deMeuron, lies directly between the Marienplatz and the Odeonsplatz in the Theatinerstraße. You can find there designer shops (especially Italy is very present...), book stores, galleries, lifestyle shops and very hip restaurants like the Vapiano (italian cuisine) or the Kaimug (thai).
Aside from shopping and eating you can enjoy art in the HypoKunsthalle which presents every year up to four temporary exhibitions.
Updates
And the best little Thai restaurant on the planet is right across from the Armani shop.
Is this your business?