I spent over a month at Fernando's place and I couldn't be happier with everything. The apartment looks just like the photos and has everything needed for the stay, heating worked great and very good internet for remote working, also a well suited kitchen and bathroom.
The apartment is very well located, very good restaurants and bars all around that work until midnight, and a very peaceful zone with little to no noise. Also the subway and several bus stations that get you to everywhere in Madrid at only two blocks.
Fernando is a wonderful host, he was always responsive to any doubts or questions regarding the apartment, very flexible for the check-in and very kind.