The apartment was very clean and brand new. Check in process was smooth and the communication with the host was clear and easy. They were very responsive and also provided us with complimentary bottle of red wine at check-in, which was a nice touch. The location of the apartment is great, they also leave a booklet with all the necessary information such as bar, restaurant, coffee shops recommendations, tourist attractions, transportation etc.
Overall was perfect for our short stay transiting through Madrid, would definitely recommend for this purpose.