Tony
Here are some images of the courses in and around Vilamoura.
The 1st at Vila Sol. Notice how narrow the green is.
The narrow entrance to the par 4 3rd at Vila Sol.
The interesting par 5 6th at Vila Sol. Can be reached in 2 if you play to the edge of the water or flirt with the narrow landing area to the right of the water.
From behind the 6th green.
The par 3 7th. Large back to front slope on the green making it tricky for those that hit it long to take the water out of play.
The short par 4 dog-leg left 12th at Vila Sol.
The drop shot par 3 13th.
The 15th at Quinta Da Lago South.
The 1st tee and fairway at Penina.
From behind the 9th green at Penina.
The SI1 par 4 13th at Penina. Not obvious from this picture but there is water fronting the green...
... and here it is.
One of the few 'houses' that borders Penina to the left of the 12th.
How to build a hole up! The par 3 13th at Penina.
And its not bad either. You can't see from the photo but the water goes around the back of the green as well.
And another shot from nearer the green.
Two par 5s for the last 2 holes at Penina. Here is the 18th which takes you back up to the hotel. Another back to front sloping green.
The par 3 5th at Pinheiros Altos. Notice the crazy contours on the green.
The island green 17th at Pinheiros Altos.
Another view of the 17th.
The Old Course is the best that I've played in Vilamoura but unfortunately I don't have any pictures. I've never played San Lorenzo so I can't comment.
Vila Sol is a Donald Steele with plenty of interest. If you play there make sure get on the original 1-18. The newish 19-27 are not up to standard.
At Quinta Da Lago, the South course is the one to play. It's quite good fun. I found the North course to be a grind.
Pinheiros Altos (just over the road from Quinta) has been ruined by the addition of 18 new holes so I'm not sure if it's now possible to play the original routing which was quite enjoyable.
Penina (Cotton) is about 45 mins west of Vilamoura. It's the original Algarve course and well worth the trip. The first few holes are a bit ho-hum but it really picks up after that. There are a lot of red and yellow stakes but the water is not really 'in your face'. It's very walkable as well.
Make sure you take your HC certificate and try to get early tee times otherwise you could be in for a long round.
Jon