I highly recommend Carlos' apartment. He was very responsive to our needs. The perfect host! The place was very cleaned and nicely decorated, functional and chic! The location cannot be better, close to everything Madrid has to offer! You can walk to museums, shops, the plaza Mayor, everywhere! And metro and train stations are around the corner. While in a busy part of town, the place is very quiet. It is perfect for couples but little small for families with kids or more than 3 people. Highly recommend it. Definitely a 5!