You are 100% right. It is a very intense place.
They are new on the WWOOF list but they are a long term reference on sustainability and simple living in Portugal.
They live in a very simple way, so I would not recommend this farm to somebody without previous experience on a simple live style. I would recommend this farm to people that want to learn and live in an almost 100% self sustainability but already have some experience on this direction.
Wish you a nice WWOOFing,