I am very happy to have stayed with David in Barcelona. He is a great guy, a fantastic host and he's actually the person who introduced me to CS! As a result, I was able to attend several CS meetings in Barcelona during my stay and met a lot of great people which made my time in Barcelona even better than I could have hoped for! Also, David recommended some great tips which helped me make the best out of my time in Barcelona. He recommended some great places to visit (the beach walk and Montjuic among others) as well as a great tapas restaurant (called Bali Tonight). I would highly recommend contacting David if you're ever in Barcelona!