We stayed at this house for over a week, a party of six, three family generations. The house is on a hilltop in a very quiet surroundings and has excellent views. It is large, pleasant and well equipped.
If you want to see Alentejo and explore Lisbon area, it is an excellent base, as long as you have a car of course.
The hosts are welcoming, knowledgeable & responsive & provided us with timely advice on the area and local wine (visits and tastings to at least close by Bacalhoa winery is a must!).
We saw Lisbon, Sintra, Cascais, Evora, megalithic site at Almendres Cromlech, Setubal, Sesimbra, Cabo Espichel, huge secluded Praia do Meco beach, Sado natural reserve and Arrabida National park -- the latter is nearby and driving on N-379-1 is unforgettable for its views on both sides of the road and overall beauty.