We liked the apartment. It fits the description on the site and the pictures there. It is not a luxury apartment, but everything works and it is convenient.
The location is indeed close to the sea and to two different metro lines (yellow and red). Therefore whatever scenario of exploring Barcelona you choose - you are fine. We had our own reasons to stay in this neighborhood, and we liked our stay.
Both Juana and Alejandra are friendly, and communication with them was pleasant. We hope to come again.