The apartment is perfectly located right by public transportation, bars and restaurants, great shopping, and walking distance to tourist attractions (Museo Del Prado, El Retiro, Puerta de Alcalá, Mercado San Miguel, Plaza Real, Palacio Real, etc).
The 3 days we spent in Madrid were extremely hot, so it was unfortunate to discover there was no AC in the bedroom, which was under the attic roof and felt like an actual sauna.
The rooftop patio was our favourite part of the place, cosy and surrounded by flowers. Ideal to have a glass of wine while watching the sun set.
All in all, highly recommended, and hopefully they'll add an AC unit to the bedroom to make it perfect.