Clean, fresh and sunny apartment, all needed things present. Perfect balcony. There are many fast-foods and cafes nearby. It's about 15 minutes to reach Calle Castellana by walk. Nacho is very courteous and responsive, it was a pleasure to communicate with him.
But sometimes, especially at daytime, neighbors can be very loud and annoying. Also, there were some traffic jams on Costa Rica in the morning.
But in general, it was very good staying. I can recommend this apartment.