It was excellent.
I definitely recommend you taking one day trip that includes Nam Talu cave. It will bring you a lot of unforgettable memories.
Just be prepared to get dirty in the jungle (a lot of mud) and get totally wet in a cave.
Make sure you have head light and some waterproof bag. And I recommend you to rent a special shoes on site, which ease you crossing the muddy jungle paths.
Have fun !!