Wow! Seriously blown away by this place. The view is even better than the photos. I promise! Unobstructed La Sagrada Familia views straight from all threw windows of the apartment. And outside of the views, the apartment is wonderful. Roomy for a small group or family or for a couple (like us) slurping for our honeymoon. The only negative could write is the shower is on the smaller size. I'm a 5'7 woman (average weight) and my husband is 5"11. When we were washing our hair our elbows hit the wall/shower door because the shower is in a corner. So if you are on the larger side, this will feel a little claustrophobic. The upside, the door does completely retract so I guess worse case, you could shower with the door open and clean up the water spray afterwards.
The location, outside being right nextdoor to the La Sagrada Familia, is also really accessible to the other areas you'd like to see. There is a metro stop just out front.
Overall, if we are ever back (and we hope we will be!) We are without question going to hope they are available!
Just do it and book this spot. You won't be disappointed l.