Location is awesome just 3 min walk to paseo de gracia and probably 6 to plaza cataluña where the corte inglés is, many many restaurants around the area all type of foods, safe area to walk, only light sleepers like my wife will complain about street noise but you have other bedroom where our kids stayed that I'm pretty sure noise won't be heard. but again you are in a busy area so there should be more than normal traffic.
place was perfect for a family of 4, with good wifi and Netflix. there are 3 tv's we only used one. kitchen has all you can need. great place to stay. you can stay here and won't be disappointed for sure.