Senator Gran Vía 21 is a solid pick for leisure travelers who want a value-friendly, three-pearl hotel in the center of the action in Madrid. The property is located on one of the city's main streets and within a short walk to public transportation, tons of shops and restaurants, and some of the city's most popular attractions. But those who prefer bells and whistles may want to look elsewhere: While the hotel does have a lovely, small rooftop pool (open seasonally) with great views of Gran Vía, and a breakfast buffet, it doesn't offer much more in the way of amenities. Rooms are clean and classically decorated, but they offer limited space. Also, some look a bit dated.