Nuria's place is heaven. The apartment has an incredible flow to it. The kitchen is connected to the laundry room that includes a wonderful clothes dryer that I used while I was there during a rainy spell. The apartment has great natural light, privacy, views, and comfortable beds... what more could you ask for? It's perfect.
If you're only there for a short time, taxis are an excellent choice and can get you to most places at an affordable price. You can also walk in any direction and enjoy all that this neighborhood has to offer. "The metro" includes the subway and "Monumental" is the closest station to the apartment.
Nuria has done a nice job of laying out instructions for staying in the apartment and by following the guidelines and being a good neighbor to the permanent residents of this building you will contribute to the friendly community feeling that this building and neighborhood has to offer.
One final note, Francisco, the doorman is wonderful. During his assigned times or shifts he's very personable and I miss his smiling face. If you see him and are feeling social, tell him Anne sends her best.
Saludos y disfrutar su tiempo en Barcelona.