5-6 days - Yunnan

Hi!
This is Beatrice from Shanghai, well from Italy but living in Shanghai and looking forward to travelling and escaping the city for few days. For the next upcoming Chinese holidays (1st of May) I would love to add 2 more days and spend 5 or 6 full days in Yunnan province (hopefully not so crowded as other spots in China).
A suggested itinerary would be much apprecciated :)
Thanks in advance!