This place is cozy and elegantly decorated. Perfect for a one or two night stay as it is very small. Three minor observations: the pans were dirty when we arrived, the toilet seat was broken, and the kitchen smelled a bit strange.
Other than that, it was comfortable and the location was perfect. The apartment is within walking distance from some of the major tourist destinations (Reina Sofia, Prado, Botanical Gardens) as well as close to some really lovely restaurants and cafes. Communication with the host was great as well.