The apartment is located in a convenient but quiet neighbourhood. We went to all the major tourist attractions almost entirely by walking. The rooms are clean and tidy, with plenty of natural light during the day. The bathroom is a little small though, so you might need to leave your clean clothes in the kitchen while taking a shower. Other than that, it is perfect for a small group of people who want to spend a few days visiting Madrid.
Mike is a very nice host, and very organised as well. All details about check-in and house rules were sent to me well in advance. And some additional information pages can be found in the living room desk. I wouldn't hesitate to choose this apartment again if I ever come back to Madrid in the future.