Put the Barcelona weekend after the study week
Gaudí architecture, museums, neighbourhoods and coast should be distributed across weekends. Fix classes, coursework and rest first; select one activity whose distance, opening status and weather fit rather than turning a weekend into a checklist.
One adaptable culture route
Choose a timed architecture visit such as Sagrada Família or Park Güell, then add one neighbourhood or seafront walk only if booking status allows.
Travel and return
Use TMB information for Metro, bus and the late return, especially from coastal, hill or outer destinations.
Weather, nature and safety
Watch for pickpocketing and distraction scams in tourist areas; follow sea warnings and travel together at night.
Four checks before leaving
Confirm official opening or reservation status, real return transport, weather or sea conditions, and companions plus emergency contacts. Current operator and venue notices govern access, timing and safety.