Connecting iPhone help please

[Human Joist]

Hi guys. Recently bout a mk5 Gti and very happy with it.  I just wanted some advice on connecting my iPhone 5 to the stereo. There does not seem to be an aux input or 3.5 jack anywhere nor is there a separate 6 disc changer. What are my options as I can see some kits for sale to wire in and I am unsure as to best option. Cheers