In reply to MattSW68:
Another vote here for Bram Crag.
To be honest though as the sport climbing isn't that great in the region, and the fell walking is out of this world good, I get the feeling you and the lad might be joining the wife and the dog on a few days, and you'll not be sorry you did either.
Keswick is lovely, good pubs and plenty of places to eat, including a surprisingly excellent Italian.