Our stay at the Arago312 apartment was very good. Positive elements were: closeness to the subway station Girona, cleanliness and space in the apartment, generally well located (you can walk to a lot of places and there are a couple of great restaurants around the apartment), staff was quick in their response.
Things to improve: apartments are older and would need some touch ups, they are not well isolated (you can hear the upstairs neighbours walking), there are a lot of apartments which are rented by the same company in the building and therefore quite busy.