This stay was much better than I could've ever expected. It was perfect for my family of 5, and the location was great. The apartment was located in a very nice and quite part of the city, and plenty of supermarkets nearby if you crave for some midnight snacks. Just around the corner is the Girona metro as well that takes you everywhere.
Overall, I just loved it to bits! I would recommend this stay to everyone who'll visit Barcelona. Thank you Oscar and Joao!