Botak
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If you like nostalgia, this is the cafe to goto. Entrance is next to another huge coffee joint Katinat, u might miss ca phe cong's entrance, since their signage on ground level is tucked in with many other shops in the same building.
Climbing up the stairs, does help you imagine Vietnam in the old days.
Though the cafe serves similar coffee and drinks like other cafes. It is the nostalgia it gives and also you can go shopping right after your break, since the entire building houses many clothing retail fashion wear.