Preheat oven to 350 degrees F.
Spray a rose Bundt pan and mini rose Bundt pan with nonstick spray.
In a mixer fitted with the whisk attachment, combine cake mix, pudding mix, eggs and rose soda. Add oil, mix until smooth.
Divide batter into prepared pans, bake until tester inserted in the center comes out clean, about 35 minutes for the large cake, about 20 minutes for the mini cakes.
Cool on wire racks.
In a bowl, combine confectioners' sugar, water and rose syrup. Whisk to form a smooth glaze. Pour glaze into a resealable plastic bag, snip off a corner and drizzle glaze on cooled cakes.