Zeneida's place is definitely well-located: if you take Aerobus from El Prat airport, it will take you to Placa de Catalunya and from there Zeneida's place is just 12-15 minutes walk. There's a nice supermarket next door from Zeneida's place and it's open 24/7. Sagrada Familia is literally a few blocks away (15 minutes walk). The room itself is very well furnished. It was a bit cold as Barcelona doesn't have central heating but Zeneida has prepared an electric heater for us and an extra wool blanket. You get a very nice kitchenette and a bathroom that are both a shared space with another guest (this part of Zeneida's apartment has two separate bedrooms) but our neighbor was out of town for Christmas so we had our room, little kitchen and a bathroom all for ourselves. Overall amazing stay, Zeneida is very nice and humble. I highly recommend her as a host and her apartment for your stay in Barcelona.