The Host: I didn't get to meet Patricia in person due to family emergency but communication with her up to my arrival was very easy, fast and friendly. Patricia's friend greeted me, who was also very nice and answered all the questions I had about Madrid & the area. Patricia kept in touch during my stay to make sure everything was ok.
The Property: It is how it looks in the photos. Clean, I thought it was spacious for a studio, it has everything you need and everything works. As many reviews said, the studio faces the courtyard inside the building so it was always somewhere between very quiet to quiet.
Yes, it is on a street where "girls work." But unless someone pointed it out to you, you wouldn't know. There are no neon signs or girls in the window. It looks like a very normal residential street. I never felt any danger from the girls or the johns. They don't bother you at all and there is always enough foot traffic on the street day and night.
The Neighbourhood: I always planned to spend as much time in Malasaña and Chueca areas for this trip and this studio was perfectly located. Of course I explored other areas of Madrid and I still didn't need to take any transportation. I was rather glad I hadn't discovered all these nice restaurants in 1 minute radius from the studio as I never would've left the area.
Overall I was very happy with my decision to stay at Patricia's. I would recommend it for someone who is looking for good location and practicality. Muchas gracias otra vez, Patricia!