This is definitely a unique experience, and we would do it again - but be prepared. Myself, my sister in law, 16 y.o. niece and 10 y.o. nephew went. We had prepaid for pickup up and spa entrance. After booking I was contacted via email for the pick up time, responded 10am. 10am came and went with no driver. Once I figured out how to call the number drop the 36 country code but dial 06 as calling from mobile and talked to a person, they sent a driver for 11am pickup. The 'hostess' were disinterested teenagers who couldn't have been less helpful. So my advice is transport yourself our return taxi was 3500FT. Perhaps prepurchase entrance - but honestly that line was as long as the regular line. Definitely bring your own towel if at all possible. There were plenty of tweens and teens when we went and a few toddlers with their parents in the outside pools.
Highlights: We had a blast in the outdoor 'vortex' pool from the entrance pool on the left of the lap pool. Super super fun. The number and variety of pools inside was also great. There is a 'cool' vortex pool inside also fun. Private changing cabins were clean - but they are individual, my niece and nephew shared because they didn't want to go alone. People watching is amazing - there are folks from everywhere, in every shape and size, everyone having a good time.
Lowlights: Towels require a 3000FT deposit you will get 2000 back if it's returned they are neither large nor absorbent. You will likely need 1 for the pools and 1 to dry off. It's a long walk to the towels from the private cabins. The woman at the towel desk is exactly as you might expect a woman who manages a towel desk might be. Overall has the ambience of a public pool - it's a little older, not sparkling clean.