I arrived a little earlier than I expected and Sergio's friend was already outside waiting for me. He identified me and after a little confusion on my part as I don't speak Spanish he showed me up to the room and around it. Lovely loft apartment. Heating worked well but mainly on the second floor as heat rises! Wifi was patchy, but if you stick to the front door desk you're fine. Hot water doesn't last forever but neither should your shower (plan ahead). Right in the heart of Madrid. Don't hesitate. Thanks!