This apartment is lovely! Just as pictured, quiet and with a nice view. All the necessities I needed, and nothing I didn't; I spent a week here, and was extremely comfortable.
Sarah and Camila were incredibly helpful with instructions and suggestions, and generally communicating about the reservation.
The neighborhood is perfect: quiet, residential, clean and pretty, full of locals and a great mix of small businesses, away from the tourist path but easy walking distance to many sights. There's also a metro stop three blocks away, and the Mercat del Ninot and Mercadona supermarket underneath for groceries just on the other side of the hospital.
Notes to keep in mind: be vigilant about the doors in the elevator, so older residents of the building don't get stranded. And shower fast! I found the hot water didn't last long.