Hi there,
If you take junction 227 from the A-5 and drive towards Jaraicejo when you reach the town(I think its a T junction) turn right up the hill.The road winds upwards for about half a mile and then straightens and levels out .After about quarter of a mile there is a very obvious turning at right angles to the 'main' road onto a wide dirt track.Park here and walk into the scrubby area.This is excellent for Spectacled,Dartford and Sardinian Warbler,Thekla Lark,Orphean and Bonelli's warblers et al.
Hope this helps,
Mark