Great location at "El Barrio de las Letras". Nice, safe, and clean building. The apartment is exactly as described. The kitchen is well stocked, has a bottle opener, knives, and a cutting table. Bedrooms are kind of soundproofed, and very dark, in case you need daytime rest. But the living room area at night is noisy, avoid the couch as a sleeping choice.
Walking distance to plazas, palaces, museums, train station. Restaurants, bars, and cafeterias all around. Make your own research, but I recommend La Vera and La Ferreteria next to the entrance. At Matute street Cocina del Sur. The small market also at Matute is great for household essentials.