Hi Karen,
I am writing from an internet bar in Chende as I myself decided to go to Beijing just for the weekend. I must say that I am impressed by the natural beauty and cultural herritage of this place. Since most of the major attractions lie in a radius of 1 km from the Mountain resort at the northern most part of the city, it is intirely possible to catch most of it in one busy day. Yet I have too say having spend two days here, I would happily spend 4 more. 5 days might be the optimal time to spend if you want to climb the mountains (and please do) see all the temples and fully explore the mountain resort.

UPS.. I was obviously going from Beijing to Chengde for the weekend. Sorry about that confucing mistake.