The flat had everything my wife and I needed for a three night stay in Madrid. The air conditioning, washer, and appliances all worked fine. The bed was comfortable, even for me with my bad back. Sandra was very friendly and gave us several recommendations. There was a very small amount of street noise, but no ear plugs required.
The number one thing was the location. There were restaurants and bars all around us, along with cool stores and groceries. We walked everywhere and literally didn't need to use transit once as we walked everywhere.