Madrid is a beautiful city with a lot to offer, and three days is a good amount of time to explore some of its main attractions. Here is a suggested itinerary for three days in Madrid, based on the search results:

Day 1

• Morning: Visit the Prado Museum and Retiro Park.
• Afternoon: Have lunch at a market and explore the La Latina neighborhood.
• Evening: Join a food tour to experience the citys best tapas bars.

Day 2

• Morning: Have breakfast and visit the Royal Palace and Almudena Cathedral.
• Afternoon: Take a cable car ride for stunning sunset views over Madrid.
• Evening: Explore the Gran Via neighborhood.

Day 3

• Morning: Visit Plaza Mayor and Sol.
• Afternoon: Explore the San Miguel Market and the San Fernando Market.
• Evening: Enjoy drinks with a view at one of the citys rooftop bars.

Other activities that can be added to the itinerary include:

• Visit the Golden Triangle of Art, made up of three superb art museums.
• Explore the Barrio de La Latina, located in the oldest part of Madrid.
• Visit the Casa del Campo park.
• Try Madrids best cocido madrileño, a traditional stew of chickpeas, vegetables, pork, and lamb.

Remember to bring layers and rain gear, regardless of when you plan to visit.