We had a great stay at Apartamentos Campana! Great location in the middle of the centre. Taxi driver had some trouble finding the apartment but it really wasn't very difficult. Ask them to drop you off at the Pastelaria Campana. If you'r standing in front of the Pastelaria with you back to it, just cross the road and there's the Calle Santa Maria de la Gracia. All sights are within walking distance (5-10 min). The instructions sent to us beforehand on how to enter the apartment (we arrived outside of office hours) were very clear and we had no trouble what soever entering the apartment with the keycards left for us. Apartment very clean and beds very comfortable. Small attention point: the shower in the bathroom adjacent to the master bedroom is not made for tall Dutch people like myself :) All in all we had a great stay, would definitely recommend this apartement!