We stayed 2 nights in a two bedroom apartment on the first floor, facing the street. Apartment had two single beds in one room, and one larger bed in the other. Two full bathrooms, a kitchen, sitting area, and balcony.
This place is EXCELLENT! The apartment was clean and spacious. We enjoyed sitting out on the balcony during the warmer time of day and in the sitting area in the evening. Comfortable furniture and comfortable beds. The entire facility was very clean and the staff was always friendly and very helpful.
The location, as other have said, is also very convenient. It's just about a block and a half from Sagrada Familia, where there is a metro stop, and the tourist buses are close by as well. We did walk downtown one day, which was a bit of a walk, but a pleasant one. If the weather is nice, it's certainly do-able.
We did not take advantage of the option of having breakfast delivered (nearby supermarket and nearby Starbucks took care of all our needs in that department). We had no problem with noise and found the entire stay to exceed our expectations. Would recommend without hesitation!