If you aren't staying at the Si Como No Hotel in Manuel Antonio, then you may just very well miss their incredible butterfly garden. However, you don't need to be a guest there to go, so if you're in the area and are looking to duck out of the more heavily-trafficked tourist areas, then head over to the butterfly garden for a little relaxation.
Whilst in Manuel Antonio, I spent a good few hours across multiple days photographing butterflies and you can see that I was able to get quite up close and personal to many including Morphos, Cattlehearts, and Malachites.