Hi
There is a bus, I can't remember the number though, that will take you to the Papagayo village apartment area from playa blanca. you will know when you are there as it is the end of the route before bus makes it's return journey.
There is a fair walk to the beach from where the bus drops you, there are different routes to take, some more adventurous than others, try to take one that leads to the beaches with a smaller decline.
The day we visited in Nov 08 the wind was coming straight off the sea and the sun hid behind the clouds a lot, at least it was a bit warmer down at Eastney

.
We hit the first bay, we where amongst only 2 other naturist couples, I think if we had of gone a bit further to the next bay,we might have met more.
Hope this helps, Enjoy, It's nice and chilled in the playa blanca area
Dave