Huatulco, Mexico?

I think it depends where you're flying from. I had a friend go to the new Secrets in Feb from Chicago and they had to stop in Houston and from Houston they flew directly there.

She said the beaches were gorgeous. They did a jet-ski tour along the coast that sounded really fun. There's also a park that you can supposedly only access via jetski that has hiking, etc. Sounds like a great place!