The apartment is just as the pictures show. About a 15 - 20 min walk to Placa de Catalunya and the center of things. There is a Metro (subway) about 2 min away but we walked most everywhere. There are lots of stores and restaurants right outside the front door. If you take the airport bus in, you may want to walk to the apartment rather than use the Metro as there are a LOT of steps to have to haul your luggage up and down.
The bed is quite comfortable but the pillows were too hard for us.
The Saint Antoni Market is about 2.5 blocks away. If you go to the lower level there is a grocery store with incredible prices. (Like a Costco but without the bulk items) Always seemed to be crowded. We got very good wine for $2 - $5 a bottle on sale. There was no laundry detergent in the apartment so we bought some and left it for others to use. Enjoyed the apartment and Barcelona.