I have ordered the book and waiting on it being delivered, from using the diagrams Bernt Stellander used at his press conference at the launch of his book The Sudden Impulse and looking at google earth surrounding the Rocha Negra area you can work out the various spots of interest he is looking at,there are a couple of properties between the areas of interest that weren't there in 2007 both were on land of which housed disused old buildings (one of them was being demolished in June 2007, Google the House on the Black rock by Ben Salmon) he posts maps from the time there is also a Golf course close by, the Rocha Negra was on there jogging route and Casa Colina the villa that Clement Freud stayed in was on the jogging route too, just to add there were two Casa Colina's in PDL in 2007 in different locations within the area,
Peter Mac has done a review of this new book and there are some relevant posts on a couple of threads available on the Jill Halvern Forum just look for Bernt Stellander and you will find.