Response from Carlos:
Hello as host of the apartment, I want to clarify that the neighborhood is absolutely safe, with a lot of life on the street as police presence. The Rastro is a nearby area, where every Sunday is celebrated the most important street market of Madrid, and indeed necessary to go visit being careful with their belongings.
The apartment is on a mezzanine.during the day no one can see inside, at night you can use curtains and blinds as well as to have the privacy.
The hot water works perfectly whenever you make good use of the facilities.
I hope this clears up any possible confusion that can generate the above comments.
Greetings and thanks.