I love Monoprix in Paris. Is there anything similar (housewares, food, clothes) in Munich?
In the Marienplatz area, the Galleria Kaufhof is a good size dept store that I often went to for housewares and some clothes/shoes. International food section in basement.
The entire area around Marienplatz is a shopping zone. Try the Salvator Passage, or the Hofstatt, or the Kaufingertor.
For
housewares
there is most likely no better adress in Munich than Kustermann at the Viktualienmarkt.
Ludwig Beck is a big department store right on the Marienplatz. I can prove that:
Ludwig Beck Webcam on Marianplatz
From this page, you can see what they sell.