Marina was great--the communication with her was easy, she is very positive and nice. She waited us in front of the building (although our flight was late ~30min), then she showed us the apartment, and gave us some helpful tips and a map of Madrid. For check out, her sister came and she was also very nice.

The apartment is small, but cute. For us it was perfect for the two nights we spent there. I believe it can be good option even for longer periods because it has all the amenities one needs. Also, it was very clean and it corresponds to the pictures.

The location is also great--the metro station is close, so the connection with the airport is easy. However, it is also close to the center, so almost everything is on walking distance (we used the metro only from and to the airport). There are many restaurants, bars, cafés on the nearby streets. I believe the area is safe.

I would definitely recommend it to anyone and I would stay there again if I go back to Madrid one day. :)