I visited Barcelona for two consecutive years. This time, I visited with my family and Mathieu's apartment looked good for us. And my decision was so right. Everything was perfect in this apartment.
First, you should stay near Ramblas de Catalunya or Passeig de Gracia when visiting Barcelona because it's the best spot to begin your trip and this apartment is situated just between them. Everyone those who ever been there would agree with this. So, you don't have to take any metro or buses to get there.
Second, the apartment was spacious for 5 people. My parents and my son loved this place and, most of all, my wife really didn't want to leave this apartment because of the size and the beautiful scenery from the windows of every room.
Third, we made some food almost every day after a tour, even though we had dinner outside, and there's everything you need for cooking. You just have to prepare for some meat and olives with wine! And also there's a bakery on the first floor to grab some bread and salad for your breakfast.
This apartment made my journey to Barcelona perfect which I will never forget.