In reply to Kyle87:
There's a good definitive guidebook which gives photo topos for individual pitches:
https://www.needlesports.com/33659/products/picu-urriellu.aspx
I did a route called Y Flake or some such on the East Face which was really good, easy set of abseils down the HS on the S Face.
A friend went a couple of years ago and got heavily snowed on in November so there is no guarantee about weather in October.
The area would lend itself very well to making an approach by mountain bike, the tracks are broadly pretty good (depending on competence with a bike I would probably walk part of the approach if you are cycling in from the Arenas De Cabrales side).