My number one is the Praia d'El Rey Golf Course, with beautifull sea views and great maintenance. Quite challenging though! I stayed in the Marriott there and the experience was positive eventhough food & beverages prices are over exagerated.
A new golf course, Bom Sucesso, was very interesting. Nice to play, less technicall than the Praia d'El rey but with a wide variety of challenges and different holes patterns. I played as well the CampoReal golf Course (nice Westin hotel there) and Golden Eagle.
I would recommend to stay 3 or 4 nights there for golfing and of course visiting Obidos and enjoy quiet Portuguese countryside!
My web references:
Praia d'El Rey hotel: http://www.portugalgolf.net/en
Obidos: http://www.portugalgolf.net/en
