Balcony is really lovely, very well cleaned and metro station is 15 seconds walking, and also Aerobus from Plaza España to go to the airport!
My only issue is that I booked an apartment with 2 single beds and 1 double bed, and instead got 2 double beds, which could had been a problem - but because it was my sister, it was okay! So ask them when or before you book if the apartment you’re looking at is the one you’re getting.