About to have the interior done on my beetle and have seen some that have been converted to 2 seater which provides more luggage space.

I was wondering is it possible to have the interior done to fit both 4 seats and when it is just myself and wife to have the 2 seat setup?

If you have photos would be great to see some examples.

fold the back seat down?

true but im wondering can you have the option to remove the back seat completely

It's only two bolts to remove a stock rear seat anyway. Then all you need is a carpeted wooden board cut to fit over the hole where the rear seat goes. I'd recommend just getting the normal back seat trimmed to match, you're unlikely ever to want to take it out. Having a rear seat in helps keep the engine noise down a bit as well.

Take the base out and the seat folds flat. its like a bed