Just as the title says!
We went to Casa Velas in Puerto Vallarta last year and it was so relaxing. Everything about that place just feels like a hidden sanctuary. There really isn't much in terms of adventure or entertainment there but if your purpose is to go be pampered and take a deep breath from real life it's a great adults only spot to do so. I'd love to go back but am also wondering about other places that have the same effect for down the road.