the space is very centrally located, on a quiet residential street but not too far from all the major attractions in Madrid. supermarket and some shopping is nearby. the host wanted to charge as 40€ for an early check-in (3 hours early), but after I made a point that they didn't have anybody occupying the apartment the day of our arrival they agreed to take 20€
it is a third-floor walk-up, so don't take large bags with you. we rented a car and parking ended up being very expensive in the nearby garage.
all the beds are memory foam, the kitchen had all the necessary appliances but no extras (such as coffee). apartment has very sterile feel it's a rental space that sees a lot of traffic.
overall 4 out of 5 Stars, solid place in Madrid.