Awesome apartment, and love the Mit checkin system. Had an amazing time at this apartment, very central, close to 2 metro stations. 2 minute walking from Sol. Noisy area on weekends (as are all areas of madrid at night) but very well insulated from outdoors sound.
Great host, very responsive. Had an issue with the elevator sometimes it wasnt working, not sure why. But luckily it was on checkout time. I spoke to marco and he said they will take care of it.