In reply to sparbus:
Quick reply, non exhaustive:
1. Low in the valley could be, but not necessarily. If too hot, head up to Gianetti or Allievi huts for sub alpine rock that would be perfect at that time of year. Watch out for afternoon storms in July and August.
2. Camping available in San Martino
3. You could start with Plaisir Sud, there are others. Try Versante Sud's Solo Granito.
Hope this helps.
L