In a pot over high heat, stir the water and sugar until it comes to a boil. Boil together until they form a simple syrup for about 1 minute. Remove from heat and set aside to cool. You want to use ½ cup of the final simple syrup (so you might have some leftover). You can use more if you want it sweetener!
In a jug/pitcher, mix all the other ingredients together. Add the simple syrup and swirl to sweeten the sangria.
You can sneak in a sip now, but refrigerate for 4 hours to overnight for the flavours to meld together properly and be smoother. Enjoy!!