Hola, from London’s only Anglo Spanish advertising agency, Creative Orchestra (Orquesta Creativa).
We love this idea – came across it in Valencia and then found your site. We want to encourage local shop keepers to do it in Crouch End in North London, near to where Creative Orchestra’s offices are. Would be great to get some ideas about how you set this up and the problems you faced. Feel free to write in Spanish as we have a lot of Spanish creatives here.