In reply to silhouette:
We liked the van scene at Entrago, and didn't notice the dog problem that Tom mentions (perhaps because we were in a van, not a tent). There are toilets, water and a shower, and a large grass area for tents. Teverga is a great climbing area, and you can walk to the crags from Entrago, so I would recommend at least giving it a try.
I don't remember seeing any camping in Quiros - the refugio is right in the middle of the village. The climbing there is also good, but a bit more old-school. We parked up overnight in a large car park just before the turn into Quiros.