In reply to Removed UserDanPyr:
You'll easily be able to pick up a 1:25 000 Editorial Alpina map in Torla.
I would recommend the following:
Faja de Pelay
Faja de Flores
Anisclo Canyon
Valle de Ordiso and over into Valle de Otal
Monte Perdido
Pena Montanesa
Valle de Pineta (bit of a drive to get round)
For a change of scene, there are plenty of options in the nearby Valle de Tena as well:
Ibones d' Ariels
Pico Anayet
A circuit of the Midi D'Ossau
Numerous walks from the Banos de Panticosa
If the weather is poor, which does happen from time to time, the Faja Racon would be ok. There are also a series of Ermitas north of Yebra de Basa that won't be exposed to the worst of it.