Crystal clear sparkingly cold swimming hole, for sure - because jacuzzis have jets and they're a bitch to clean. lol They should make that bit of info along with a demonstration of the process a requirement in places that sell them...and I don't trust someone else cleaning them for me, and the idea of a public one....Yuck.
A comfy reclining chair or a comfy chair with an ottoman?
Pool - especially if it was a natural design outdoor one. I don't live close enough to a beach to visit - and if something were to touch my leg or foot and I couldn't see it - oh hell no! lol (Ironically, I grew up swimming in rivers)
Take a walk in a lush green forest or take a walk in a public park?