We stayed at Consol's apartment for 3 days and 3 nights, with 4 kids. The apartment was clean and is ideally located if you want to visit the Sagrada Familia (don't forget to book online in advance) with the L2 metro line just 5 minutes of walking distance away. From this line you can reach with just a few more stops many of the points of interests of Barcelona. There are at least 2 groceries nearby, and if you don't want to cook yourself, you can have lunch or diner at Karli, a very simple place where kids are welcome, and the food is as healthy as it gets.