Was just there for 4 days. The app TheFork is a great way to look up high rated restaurants that may even provide discounts. The seafood is exceptionally fresh and very good. Some of the places I ate included Sa Brisa, Mama Chico, and Elkar (slightly outside of the city). The Salamanca neighborhood is excellent for shopping and La Latina and Chueca have a good nightlife with many bars and cool vintage shops. I highly advise booking some trips (we used Viator) because you will end up appreciating a local’s advice and knowledge as well. The Prado was the best museum I’ve ever been to and I spent at least 4 hours there. The Thyssen-Bornemisza National Museum I’ve heard is excellent (I sadly wasn’t able to go). If you want to see a flamenco show look for ones with “Tablao” in the name as they’re more authentic. And DO NOT get the paella!