Elena has been a customer of the Lázaro mattress store, located at number 184 on Calle Gran in Sant Andreu, for over fifty years. She keeps the memory of Teresa Feliu, the third generation owner of this family business and mother of Sergi Gay, the current owner, on a pedestal. "She knew how to sell like no one else and she knew everything about dealing with people, with the need to listen and advise," recalls Elena. She is chatting with Sergi because yesterday she bought a latex pillow, but she needs to change it because the new smell clashes head on with the chemical sensitivity that has been bothering her for some time. "Don't worry, we're sure to find a solution," says Sergi. "How about a fiber pillow, I think it will do you good." This is one of the keys to a business like this, the ability to understand the needs of the client, to advise them on changing their mattress, on whether their back pain could improve a little if the pillow was better fitted and, above all, always educating them on how important it is to be able to and want to rest well during their sleeping hours.