In reply to ALF_BELF:
You really are spoilt for choice. Catalunya has possibly the best and most diverse set of sports climbing crags in Europe. A good place to start would be with one of the two POD area guides to two of the main regions: Tarragona and Lleida. There's tons in both and if I were to massively oversimplify I'd say the former was better for single pitch cragging and the latter for longer adventures. Both would occupy you for months, let alone a week or two
We've visited over 50 crags in the area over the last few years (mostly in "shoulder season" October or February) and there's beta and photos for each of them in the Catalunya section of our blog
https://rockaroundtheworld.co.uk/category/spain/catalunya/
Hopefully useful to have the perspective of a travelling Brit. Have a browse and take your pick. Personally, if you haven't been before, I'd be tempted to base myself near Siurana (and Montserrat would be a long way down my list).
Have a great time!
Post edited at 17:42