What can I say, if you're looking for a unique experience, look no further. These are one of the quirkiest hosts you'll meet, they are kind and caring hippies with a wealth of good vibes and stories.
If that's not enough to sell you, the caravan has history and character and is nice and cosy. You're awoken by roosters in the mornings and you walk outside in the to be greeted by their lovely dog Toven.
For breakfast, they gave us fresh farm eggs that were incredible. I also have to recommend the dinner. It's 9 euros and it is an authentic Portuguese meal with variety and they even catered to my girlfriend's needs as a vegetarian. (And the wine, ask about local wine. It is cheap and very nice)
They are also very well informed in the area, if not the whole of Europe. One of the hosts Martin has lived basically everywhere so ask him anything. Where to eat, where to go, they have a well rounded knowledge of the area.
If you're a precious person however, don't bother. Some of the equipments around the house might not work perfectly, and it is a house that is obviously lived in. But in every other sense, they are lovely people with a lovely old home and if you want a story to tell when you go back home, I highly recommend choosing this air BnB.