Actually, I ended up choosing a spa pavilion. The Hydro Pool Pavilions are all in the "Phranang Zone," which is an area close to Phranang beach that does not get as much sunlight as the area around the swimming pool and spa.

The Spa pavilion I stayed in was nestled right at the food of the cliff bordering the swimming pool. I found that location to be preferable to the location of the Hydro pool pavilions. Another factor for me was that I like the fact that the spa pavilions have outdoor jacuzzi tubs that are filled each time with fresh water.

If you take a family pavilion, the choice seems to be standard or Hydro Pool. If you choose a regular pavilion; you have the choice of standard, Hydro Pool, or Spa. Here is the map of the resort.

As I said, I prefer the spa pavilions that are located near the main swimming pool. Please feel free to pm me any time if you have any more questions.

Cheers