We are doing a week in Madrid with our children ages 12, 10, 7. We will head to Seville for 2 nights, but would love recommendations on things to do with kids, places to eat, etc. We are staying right by Retiro Park. Thank you!
Here's my recent trip report that has details that may help you. https://community.ricksteves.com/travel-forum/trip-reports/trip-report-spain-november-2023
If possible, add another night to Seville - it's really lovely there.