The French-inspired patisserie & cafe is a delight. I would highly recommend that you visit this place if you are visiting Markham. I really enjoyed the Black Forest and Mont Blanc. The desserts are not overly sweet which is the way I like it. Duo is definitely a top spot for French-inspired desserts and would satisfy any sweet tooth. Their coffee and lattes are also quite good.
The atmosphere is clean, modern and minimalist. A good place to meet up with a friend, share a dessert and have a coffee.