The apartment is in a very central location - only 5-minute walk to Atocha (most important train station) and 20-minute walk to Puerta del Sol (city center). It has all the necessary ammenities except for washing machine (there's a "laundromat" nearby) and air conditioning is without an external unit (so it's noisy and you'll have to keep a window open to put the hose with hot air out). On the other hand, internet was very fast so it was quite convenient to work from the apartment and it's nicely designed too. Jay and his friends were always responsive and helpful. I would definitely recommend for shorter or longer stays.