"Searching for a flat in London is no fun, especially after a summer in Spain. The search persists day after day. The air chills, a reminder of the English winter marching towards me. Emerging from the Charring Cross Underground station to scout for an Indian restaurant, a travel poster catches my eye. The gentle curves of a white sand beach banded by a wide ribbon of turquoise dissolving into deep blue defy the London gray. Coconut palms with shaggy yellow-green fronds cast soft shadows on shimmering sand while two empty orange chaise lounges relax in tropical luxury. Below the picture, in...