Great location within a 5-10 minute walk to La Sagrada Familia. Easy check in process with nice apartments. Chose this place as I needed somewhere with a washer as I was only staying one night in Barcelona and needed to wash some clothes. I was on the first floor which had a outdoor patio. Just in case you are nervous about that if someone tried to get in it would be very difficult as it is below the street level about 20 feet and there are metal doors that can shut in front of the doors/windows for added security.
Only issue I had was the internet would immediately stop working once I entered the bedroom.