Great location and everything is within walking distance. It's easy to check in / out with the code. The kitchen is small but well equipped. The beds are comfortable. We loved the sound of the city, but some might be bothered by the noise from outside at night. We didn't use the terrace on the top but spent some time at the balcony in the morning, eating breakfast. We would recommend the restaurant near the flower market down the street.
Overall we spent a great time in Barcelona, staying at Fernando's.