Appartement was not preheated (fck freezing), travelled in February, had to ask for heating-really-yes, got informed that only 18 degrees is allowed by law?, asked in different restaurants nobody knows about it, talked again with her, she informed 21 degrees is possible but only for 12 hours- really - yes - this was the answer! - cancel - new host also didn't know anything about this law - worst stay of our life -never again!