For beauty & photography, Picalagartos Sky Bar delivers.
An actual cocktail bar with a view rather than a viewpoint that happens to serve drinks — a bohemian, low-lit terrace wrapping the top of the building, busiest at sunset when the Gran Vía rooftops glow. Drinks and small plates by an in-house mixologist; the bar runs first-come-first-served while the floor below takes reservations.