If you want to get an idea of what Spain is like without being in a super touristy area, I highly recommend this location. The apartment has all the amenities and what a spectacular view.
The metro is across the street. The La Sagrada Familia is about a 15 minute walk. We enjoyed seeing a Barcelona neighborhood and had delicious food at so many places, within a few blocks of the place.
One caveat: The internet is very slow here. I thinks it may be the buildings in Spain but, if you really feel the need for internet on vacation, I would recommend getting a pocket WiFi, which you can rent. Not a big deal for me at all.