Luis and Sandra's place is near Plaça de Espanya. As a tourist, this is not particularly near the more touristy section of town by La Rambla and Plaça de Catalunya. However we chose it due to an easier airport ride in the morning. There is a metro stop right around the corner which connects you to anything you want to go to! It's a more quiet area which was nice as well. Spoke to Sandra only briefly, as she showed us how to use the keys. Small flat though with others living there, so maybe not the best choice if you're interested in going out at night. Super comfortable and convenient for a 1 night stay while waiting for a flight!