The best part of the apartment was the rooftop patio - which offered gorgeous views of the city. We also enjoyed the location, in a quieter neighborhood of Barcelona away from tourists, and it allowed us to get to know a new part of the city. Everyone also felt safe walking home alone at night.
The negative parts of the apartment that are worth mentioning are: that it has no air conditioning so our room was very hot every night, and the neighbors downstairs had children that were loud and stayed up late, and you could hear them from the window (which had to be open because of the heat).