Katya first of all is an amazing person! You will absolutely love staying with her and getting to meet her. The place is amazing too, and the view of the city from the balcony is indeed spectacular. The rooms and living spaces are clean and spacious, with plenty of room to move about around the bed or put your belongings. The check-in process was also very easy, with Katya personally explaining all the key elements. The location was also perfect, as it was a 2-minute walk away from Metro Line 1, which is honestly the best metro line for travelers in Madrid, since it has direct connections to both the city center and the Atocha train station.