Walking along Lisbon's tree-and-poo-lined streets, in deliciously sweltering days that make you sweat when you think, with warm nights, stunning sights, carnivourous meals, sangria and incredibly hospitable hosts... I am reminded again why I travel.

And in my first experience as a Couchsurfer - I have hosted a few times, never before guested - I can certainly recommend it. For those who aren't familiar, is an international site where users can either stay or host for free in their own homes. Of course, a bottle of