Unfortunately there was freezing cold in the apartment and heating did not work at all. When I asked help from the host responded "turned on the knob" which I did and didn't help then replied after that mostly "moment" or no answer at all. When I wrote them some hours later that "no help then" as a sum up, reply was they will send somebody next day to check it (when I'm already checked out and left the flat..). I totally understand that an unwanted situation can happen in any flat but I do believe that handling them is almost as important as to fix these issues.