Nice apartment, exactly as seen in the photos, well located in the Madrid opera house. The problem is that the temperature of the central air conditioning cannot be changed (as described in the apartment manual), the control is inside a locked box, and with the strong heat in Spain we couldn't sleep at night. If we opened the window at night, the noise from the street and the smell of cigarettes was even worse, this situation made the days in Madrid terrible. I sent a message to the owner asking if the temperature can be adjusted at night because it was impossible to sleep, I got an automated response from what was in the manual saying that I could not change the temperature. She even explained that using the air conditioner would increase the cost for her and that it would decrease the profit. I believe that this was not information that should be shared with guests. When a person places an ad for rent, they have to include all expenses, including air conditioning. I recommend it only in winter, but even then the noise when opening windows at night makes it impossible to sleep.