I got a reservation in Pousada Estremoz for 3 nights through easytobook.com. Actually, when I tried to reserve a room directly in the Pousada it was fully booked, so I took that offer thinking it was a special deal with the agency. The morning before our arrival I received a phone call from someone of a travel agency with the news that our reservation had been cancelled, but they offered me a better acommodation in a 5 star hotel in the area. Obviously, they never had that room reserved.
This is one of the worst experiences that I've had with a travel agency, so my recomendation is never to use easytobook.com