Ianto's eyes aren't on the ocean but on Jack's face. If they ever get back to the old prison maybe they should consider a permanent move to one of the beach huts - or at least spend the night there more often - if it's going to make him that happy. He loves the expression on hostage as he takes in the view of the ocean from the huge picture windows.
"I don't know where we are but it's beautiful." He's not too concerned about the new location just yet. He can't help it. It's hard to feel anything but good just now.