This might seem like an odd post, and it's definitely one for the tourists reading, but I think it's a pretty valuable addition to a guide book/photocopy to have in the back of your guide/map. Basically, it's a map I picked up for the local council office the other day (it's actually from 2006) and shows the location of all of the public toilets in Cuitat Vella - the 4 neighbourhoods of El Raval, the Gothic Quarter, Borne/Rivera and La Barceloneta. (Apologies for the por quality of the image but if you click, it's a bit clearer).
It's obviously a sore point for some bar owners in the city, who often have hand-written notes reminding people who stumble into their bar that "the toilets are for customers only" and the like. Pretty common around the old town, I think you'll agree. So the above map is actually something I'd love to be given if I was visiting a new city - OK, my kids can use a tree stump or a drain (they're both under 4) but it's not quite the same for me! So I hope this serves a purpose for someone out there, and saves you buying a coke somewhere when the last thing you want is to drink some more!
Coming to Barcelona soon? Try Apartments for rent in Barcelona as a great alternative to hotel rooms. And for a heads up on the main city sights, check out this Barcelona Guide.