What a fantastic stay, and what a kind and generous host! I loved my time there. The island is such a magical place-- I hope to visit again soon!
It definitely is best to have a car so you can drive around to visit the farms and home studios. It isn't too hard to get around in foot-- the bus is great, and you can flag one down to stop anywhere along their route, but they don't run all that often. The roads are too narrow and twisty for biking, I wouldn't recommend getting around that way.