I am deeply frustrated to host you who only complain, even before entering the apartment. Not even the details specified in my ad were read (for example, what is the address of the apartment, the fact that there are stairs, that it is an old building from the 19th century although the apartment is totally new, that there is a fan in all spaces, that the rooms have their own key to give the maximum possible privacy, etc.) put complaints for having to wait 5 minutes when they had been given the possibility of doing a late check in. You even did not read that it is a private room in a shared apartment. Do you think that you can book a whole apartment for 35€ in a 160sqm apartment in the best area of the center of Madrid? Nonsense!
You thought about leaving before your departure date, but in the end you stayed every day. The point was to complain to break the pleasant atmosphere in the house. No other guest complained.
It's curious that only these things have happened to me with guests from Korea. I hope to meet someday a Korean guest who knows how to see cultural differences as a great opportunity to open your mind and enjoy the wonders that Madrid offers and not as an eternal source of complaints for not having the same as in your hometown. It is clear that traveling is not the same as tourism.
감사합니다! (Thank you)