My friend went for the Gibbon experience post this which is a little expensive for people on a budget. He took the slow boat from Luang Prabang to Huay Xai which takes two days to reach. There the treehouse, trek, and climbing along with the final zip lining experience is definitely memorable and the videos seemed amazing. If you arent on a budget I would recommend you try this for sure! Though there are numerous other cheaper zip lining options in the Vang Vieng and other places this in the jungle treehouse experience is definitely better.
Laos is a very beautiful country yes. It is very hilly, with the Mekong river passing through. It has rocks to climb, rivers to kayak in, sunsets to see from hilltops, hot air balloons to experience, caves to venture in with unexploded bombs scattered in a few, fine dine classy restaurants to have a fancy meal in and night markets to shop for till your feet drop! It has it all. And compared to India, much cleaner, smaller and happier. So don't think twice, go take a break in Laos!