I used to do a bit of couchsurfing and really enjoyd it and have decided that it is the easiest way to travel and find places to sleep during my walking holiday.

This won't really sound amazing but as I see it, the most amazing thing I've done so far would probably be a workcamp (sounds horrible but it's not what you think it is) I did Summer 2015 where we were 30 volunteers who came from all around the world, and we met up in a small village in the middle of nowhere in the spanish mountains, it wasn't actually for the work that it was amazing, funnily enough, but more for the people I met there.