The apartment is just as it looks in the photos. The size is fine for 4 people or less. It has everything you will need for a budget trip, kitchen stocked with dishes for cooking, washer and space to dry clothes on enclosed patio, good wifi, towels and we were received with a bottle of wine. The location is EXCELLENT. Callao metro station is 2 min walk, it's a short 5-10 min walk to Puerta del Sol (depending on your speed) and about a 15 min walk to Plaza Mayor. There’s a Corte Inglés with full supermarket at Callao metro station if you want to buy groceries/beer/etc. (cheaper than the quick shop next to the apartment!). If you don't mind walking 5-10 km a day to see Madrid, you can definitely do it from this apartment. From here we walked to Palacio Real and Parque del Retiro. Melvin and his colleagues were very attentive to our questions beforehand and once we arrived to receive the keys. Recommended!