I did this a couple months ago!! It was so fun! There was a little bit of a hike between some of the lines so be prepared. The scenery was so beautiful!!
This was so relaxing! The only thing is that it was pretty crowded. There were a few pools without many people in them though. I did not try the water slides because the tour group I was with decided not to due to liability issues.
Costa Rica Hot Springs - Arenal Volcano
This was so fun!! Our guide was hilarious and he obviously loved his job! Be careful though because their pineapple was so fresh and rich in flavors that I ate way too much and my mouth hurt for days!