Picos de Europa

I've been thinking about going to the Picos de Europa in Sept having heard it's a wonderful place.  The cicerone guide book is more of a climbing guide and the web-based information in English seems to be vague (unless I'm looking at the wrong websites).

Where is a good place to base ourselves? Or would we be better moving around, say a few days here, then a few days there?
Has anyone got any tips about good places to stay, either B&B or camping ?
What are the must-do walks there?
If we go it'll be 5-7 days with a hire car so we're pretty flexible

Many thanks

It's true that there aren't many websites in English. The Picos aren't actually that huge a region so you could stay in one place for the whole time if you wish. If you want to bas yourselves in one place for the whole week I would suggest Las Arenas on the north side or Posada de Valdeon in the south, that way you have fairly easy access to the majority of the area within reasonable driving. Alternatively spend a few days in Potes in the East and then Cangas de Onis in the West but these are bigger towns. I would recommend Sotres. I've stayed in 2 places there and would recommend casa Cipriano which is good value for half board. It is run by mountaineers and the food is plentiful. However there aren't really any shops there so you would have to go to Las Arenas to buy provisions for the walks or bring it all in.

As for walks there are loads: Cain river gorge, Lagos de Covadonga, up to Naranjo de Bulnes (If you climb then do the peak as well it is worth it). I could go on.

Here are a couple of links that might interest you. In spanish but they have ideas for walks.

http://reddeparquesnacionales.mma.es/parques/picos/pdf/ruta_gr_202.pdf

http://www.edicionesdesnivel.com/files/ediciones_desnivel_senderosgrpr_picoseuropa.pdf

A few more links - I went several years ago:

http://personal.telefonica.terra.es/web/picos/pag3.htm

http://www.espeleoastur.as/articulos/cavemagmapage/Picos.html
Caving as it suggests - but I found it useful to gauge whether or not there were tracks around and to the caving areas.

http://www.picoseuropa.net/itiner/index.php

http://www.transportedecantabria.es/web/guest/home
How to get around by bus - some good info buried in here

Cheers, plenty to think about there

We'd like to do an overnight hut to hut walk whilst there.
Did you guys do any? Most of the routes seem to be up and down again and any circular walks seem to be 4days+
Ideally I'd like to something circular to end up by a road to get back to the car again (bus or walk or hitch)

Thanks

Day 1 - Start at Fuente De. You can Leave your car and there is a campsite. Then take the cable car and walk to the refuge at the base of Naranjo de Bulnes about 6hrs. Day 2 Go to Bulnes and then follow the GR over the Collado de Pandebano to Sotres and stay their the night. Day 3 Follow the track along the Rio Duje towards Espinama but turning off for the Hotel refuge Aliva back to Fuente De.

Alternatively if you only want one overnighter Day 2 go back to Fuente De following the track of Collado de Bonita and Canal del Vidrio (4-5 hrs).

thanks