On two previous visits to Luang Prabang we somehow never managed to find time to visit the falls, so we were pleased that we finally got around to it on our third visit. We left LP after lunch in order to arrive at the falls just before three, so that we could see them in afternoon light and get back to LP before dark (sunset about quarter to six).
We hired a sawngthaew for the two of us at a cost of $20, having bartered down from $30. (The vehicles based on a motorcycle can't manage the hills; you need to find one with a van cab). The hour's journey itself is fun, through villages, past water buffaloes in the fields, with views of distant hills, On arrival at the falls there are plenty of souvenir vendors and snack stalls. The Asian bear sanctuary is on the right shortly after the entrance and we had good views of several bears (they go into their night time enclosure about four, with a lot of very noisy protests). You can donate to their upkeep here, which we did.
The falls themselves are a reasonably steep climb but not excessive for older or less mobile visitors. The colour of the water is a surprising and beautiful turquoise - some of the pools can get quite crowded but it's fun to watch more intrepid swimmers swinging out on a rope and diving in. At the top are some quite large falls which cascade down cliffs and, given that we went at the end of January (dry season) we were quite impressed by the amount of water.
A really good half-day out, or a whole day if you take a picnic - some locals had taken cards, crates of beer, and picnic mats with them. Perhaps we'll do that too next time ...
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.