Our guide, Hikmet, has an announcement to make on the last day of our three-day excursion to the Turkish region of Izmir. “Today we go to the naked beach,” he says. While my travel companions, a lovely English couple called Jonathan and Brenda, and I have got to know each other well over the last couple of days, there’s a collective feeling that spending the morning sans vêtements would definitely be a step too far.