Apartment is situated well, it's 12 minutes away from Plaça d'España, it's not very crowded there and quiet enough. It's convenient to get to the airport from there.
Interior is modern and nice. Everything is very clean.
Also some small minuses took place. For example, I didn't find a corkscrew, and I had to pay the city tax for 3 persons, which was approximately 5 euros, that, if I remember it correctly, wasn't mentioned at the moment, when I booked the flat (I can be wrong), but in general I'd liked staying there. :)