Medialab Prado is the coolest place to work, to collaborate, to do workshops, to participate in events and conferences. They are the nicest people in the planet doing such interesting programs. My favorite is Interactivos. It is also a good place to meet new friends and go afterwards for beers in the bars around Lavapies, a district full of art galleries and Museums.
Spanish artist Jaime Hayon is sometimes called Almodóvar of design. So if you like "Kika", colours, Spanish culture and dreamy aestetics, you must visit Barceló Torre de Madrid and stay there for a night or just have a drink in a golden bar.
Edificio residencial del arquitecto Sainz de Oiza racionalista y moderno con el portal al más puro estilo italiano. He vivido en el y es el claro ejemplo de arquitectura bien hecha dejo la fachada sin que la veáis para que os paséis y disfrutéis del orden