This apartment is located in a great location on Plaza Espana. Very clean, and great communication. There were some drawbacks with a complicated check in process requiring me to upload selfies and loads of info in addition to the expected passport info. The site wanted my credit card information too but Mudflats was able to turn this requirement off for a brief period, but again required some back and forth with WhatsApp and not the easy seamless checkin I am used to from AirBNB. In addition there is an in-person check in. The apartment was very warm upon arrival and we were told the AC was just turned on and programmed correctly and to give it some time. After an hour of temp 35C we contacted MudFlats by WhatsApp. They sent someone over to reprogram the AC at 4:30 (so 3 hours of the heat). The air from the AC was distinctly louder and colder than upon our check in with the initial agent. Other than that hiccup, the stay was great. Of note, the bedroom does not have a door, so if someone is awake in the living area with lights/TV on that will go right into the bedroom. Great black out blinds for the long Madrid daylight and very quiet for being in such a central location.