A great location and property. Central to everything you could possibly need. Clean, comfortable and quiet. As it was my last week in Barcelona, I was out pretty much everyday, but it was very comfortable and clean to come too everyday.
A few small tweaks to the experience can be made like getting a wifi booster as there is no wifi signal in the bedroom at all and I had no mobile reception either and also I had to ask how to open the security shutters only to be told I had go outside of the apartment and use a key to unlock the shutters first, that could easily be added to the check-in instructions.
These are not faults and didn't hinder my experience in anyway, just some suggestions to improve for the next visitors.