Outstanding property.
Contacting the host was easy via whatsapp. The host was reachable a month before our arrival date and also while we were there. They also provided an after hours number for urgent matters although we did not need to use it.
There was an issue with the Spanish online payment portal when I tried to pay for the booking with my usa-based credit card. The transaction would not go through. I contacted the host and was told "no problem, you can pay upon arrival" - making the payment was easy upon checkin.
Checking in was so easy. We told the host our expected arrival time and a staff member was already there waiting for us. We were a family of 5 and there was plenty of space and two separate bedrooms so plenty of privacy.
The kitchen was well furnished, with a nice big fridge (for European standards). An instant coffee machine was provided with both regular and decaf.
There is a combo washer and dryer that worked very well. We also used the clothing rack to dry big items like jeans. Simply put the rack on the balcony and things dry very well.
The location is steps away from gran via so the neighborhood is busy day and night. If you are looking for quiet then consider another property. We did not mind the noise because we were steps away from the bus stops, the metro, and the amazing nightlife of Madrid.
Everything you need is close to the property, a pharmacy, supermarket (Dia), bars, cafe's, and shopping, 24 mini market right across the street.