Combine the water and sugar in a small pot and bring to a boil. Stir in the lemon juice. Remove from heat and pour into a small bowl. Chill until cool.
Transfer to freezer and freeze for 3-4 hours. Remove the bowl from the freezer, scrape with a fork, and return to the freezer.
When you are ready to serve, let the granita slightly soften. Scoop into individual glasses. Add the delicious honeycomb on the side and garnish with the Viola flowers. Serve immediately.