Barcelona? Looking to hire a "reasonable" bike or trike pre

[Hobbit]

Yes, hello, i'm spending a week in barcelona and looking to see some sights via maybe a rental bike or trike. Does anyone know of anything much around?

I found these guys...http://www.w4nted.com/contacto/en and seem to have the usual stuff. I'm just putting out a feeler to people who might know if anything more "exotic" was around here?