Although I'm English, I've been living in Spain (Barcelona and Madrid) for half my life, so that must make me "bicultural"! I discovered airbnb in August of last year, as a traveller in the US, and love the opportunity it gives, as a host, to meet the widest range of people, with all sorts of interests and profiles. Madrid is a great place for a holiday - it can be as relaxed (all-day tapas, siestas) or as lively (bars & clubs everywhere, except for my street fortunately) and as cultural (I'm really close to the 4 major galleries) as you like. And for football aficionados, well, it's obvious! I would be delighted to give as much or as little guidance as you want to have. Come & stay!