This place is truly unique and it's obvious the owner has put many painstaking personal touches into it at every turn. And since it's a windmill, there are continuous turns.
My first day there was a storm and it was Monday, so many places on my itinerary were closed. I had a great day in with a cozy fire (abundance of firewood!). Note on fireplace, the ash catcher pulls out from the knob at the bottom. It's not very deep so pull out carefully and I would ask Ricardo where to dump ashes if I returned.
Only downside, there was no hot water. However, it seems this was unfortunate bad luck due to a previous guest inadvertently shutting a valve or something of that nature which I failed to snoop out. I worked around it using the hot kettle, a couple pots and wash rag - a bit like camping but really not as bad as anticipated.
Also, you will need a car. The recommended grocery store is a 10min. drive, large Sintra sites about 15min.