I've fancied the idea of a narrowboat for donkey's years, but they seem awfully cramped inside and a bit restricted as to where you can go.
I always end up going though the cycle of rejecting a narrowboat in favour of an airstream caravan, rejecting those in favour of a motor home, then remembering why we didn't use our last one enough to justify ownership and deciding that it's easier to stay at home, from where it's dead easy to cycle to the pub and you don't have to put up with tourists.
Still, it's nice to daydream, isn't it? And if I lived in a town or a built up area with neighbours and stuff I'd have a completely different view, I'm sure they'd be a great way to get away from it all for a bit of peace and quiet.