Rosario and Diana's apartment was perfect for my month in Barcelona. Very centrally located but not an overly touristy area so you get a real feel for what it's like to live there. I found my favorite local spots right away. Lots of good food, super mercados, and a lot more.
It's a busy area but I love the sounds of the city and had no issues sleeping because of this. One of the bedrooms is next to the stairwell/elevator so that room can be a little noisier in the morning, but otherwise, the building and neighborhood were relaxed and fun.
The kitchen was great for cooking, and having laundry in the apartment was excellent!
I highly recommend their apartment for an excellent stay in Barcelona. Diana was super helpful in recommending local resources and more. Check-in and check-out were so easy.