Saw it while walking and took some photos.
Just made a look-up on internet about this and it's another sp. called "Jasminum grandiflorum", the spanish jasmine / catalonian jasmine / Royal jasmine, I also live in Spain.
Jasminum grandiflorum L.
Family Oleaceae, Genus Jasminum
Taxonomic data provided by Species 2000 & ITIS Catalogue of Life: 2008 Annual Checklist,
using ITIS: The Integrated Taxonomic Information System version Nov 2007
Latest taxonomic scrutiny: 15-Mar-2000
This name is incorrect - it's a synonym for Jasminum officinale L.