The best part of this apartment was the hospitality. Carmela was so helpful in answering questions about the accommodation, but also about the best ways to get there, and the best restaurants nearby. There is a grocery store very close (essentially next door), and there are two metro stations within a very short walk. Carmela had left some fresh fruit and pastries for breakfast too - very much appreciated after a longer than expected journey.
The Sangrada Famillia is about a 20 minute walk (I think a short cut is closed for construction, but will open again soon).
The apartment had everything that you would want (don't worry if you forget toiletries), and the master bed was incredibly comfortable.
It was a great place for our family to stay for our Barcelona adventure. To top it off Carmela called a taxi for us on our final day to take us to the airport - another example of the great hospitality.