My personal highlights of the apartment are:
+ The check-in process was convenient.
+ The views from the window are so amazing, especially when it gets dark and all the lights go on in the city.
+ The location is really good. You have supermarkets (Mercadona, Consum, …) nearby and the next bus stop and metro station are very, very close. So you get along without a car just perfectly.
+ Everything is very modern and the place is equipped with all you need even during a longer stay, like an electric kettle or a vacuum cleaner. I also loved having a dishwasher.
+ It has air conditioning. This is especially useful in the hot summer months.
+ I found the sound isolation inside the building good. Even if there is some noise from the street you do not hear much of the other apartments. This is worth mentioning because in other apartments you sometimes even hear your neighbours cough.
+ I think, altogether the apartment has a good price-performance ratio.