Not sure if it's the same, but if that Golf has the AHW engine then that's the same as in our Polo 6N2. It's a DOHC engine and has 3 belts and tensioners.. As someone already said, time to get your wallet out. If you're slipping the belts off to do the water pump, may as well do the belts too.
I had the water pump replaced as we had the belts done.