Despite my like of Luang Nam Tha, Luang Prabang for me was when Laos revealed itself. It's a really nice little town on the Mekong and is comparable in a lot of ways to Hoi An in Vietnam (another town I liked), a good mix of tourists and locals. Similar small, independent shops and old style architecture make for nice walkings, plus the daily night market is one of the best i've seen for non-tat tat. The people here are equally friendly, helpful & chilled out and serve in abundance baguettes, fruit shakes and great Laos coffee.
I spent my time exploring, visiting the Royal Palace, spending a day at the Kuang Si waterfall (beautiful, cascading, aquamarine - check the descriptive words - water with various levels of swimming and no swimming areas, plus a rope swing) and hanging out with guys who also headed South after trekking; namely Captain Leach, an English guy called Danny and my new travelling companions the Spanish. We have drunk many a Beer Lao, ventured to the local discotheque "Dao Fa" for a bit of a rave, partaken in some after hours bowling (the only place open post mid-night - a weird thing) and generally lounged about the night stalls and bars. I would say a good time has been had.
Luang Prabang, my new favourite place. Coffee anyone? X