Seven nights in Barcelona is definitely not too long; in fact, many seasoned travelers consider it the "perfect" duration to truly experience the city without feeling rushed. A week allows you to properly explore the major Gaudí landmarks like the Sagrada Família and Park Güell while still leaving time for the "hidden gems" in the Gothic Quarter and El Born. With seven nights, you don't have to choose between a beach day at Barceloneta and a museum day at the Picasso Museum—you can comfortably do both. Furthermore, a longer stay allows for at least two high-quality day trips to places like the jagged peaks of Montserrat, the Dali Museum in Figueres, or the charming coastal town of Sitges. Staying for a week also changes the pace of your trip; instead of a frantic "check-list" vacation, you can enjoy long, leisurely tapas dinners, explore local neighborhood markets like Gràcia, and truly soak in the Mediterranean lifestyle. By the seventh day, you’ll likely feel like you’ve only just scratched the surface of this vibrant Catalonian capital.