Excellent location, the Poble Sec metro station is a 90 second walk, main shopping and attractions are at a 15 to 20 min walking distance or a short metro ride away, grocery stores are all around the apartment, all very convenient! Very pretty apartment, just like it is in the pictures. Well equipped kitchen (I recommend keeping salt and pepper in addition to everything else). We received the apartment shining clean when we checked in!
The central air-conditioning seems to be powered by a small unit and Barcelona was hot (30 degrees C) during the time we were there which made it uncomfortable at night. I suggest the owner upgrade the air-conditioning to a higher tonnage or install individual a/c's for each room.