Rosa's flat is really nice. The location is good if you wanna go to the beach 5 minutes walk. There is a subway 10 minutes away that takes you to the city center near la ramblas in 4 stops.
The flat was very comfortable. You can find everything you need.
Local shops around the flat to do food shopping.
Quiet area but still you can find restaurant around for food and drinks.
Definitely recommend this place for a stay in Barcelona. I stayed in Barcelona before and this area was good if you wanna enjoy beach and city.