In the end I was enjoying nosing around Brussels too much on foot to be bothered with it. The logistics would have been a bit arkward on a Villo! as well, but I did have a mess about on them. They ride well and cope with hills a good deal better than boris bikes with 7 gears, however the brakes on all 4 I rented were absolutely appalling, bordering on dangerous. If anyone ends up using one, I'd brake test it first thing so you're aware what you're dealing with.