Great apartment, really clean and spacious and quick responses to all communication. We were also able to check in early which was greatly appreciated. Gràcia is a quieter neighbourhood and away from the hustle. We visited Plaça de Sol several evenings...great local square for drinks and tapas. It was really hot when we were there so we opted for the metro to many of the main sights but in cooler temperatures they would be walkable. I would definitely recommend!