A lack of professionalism and obvious seriousness:...

A lack of professionalism and obvious seriousness: I was informed the night before at the end of the evening that my hotel room reservation was canceled and since my emails remain unanswered.
The compensation is dishonest: I was scandalously relocated to a hotel not offering the same benefits at the same price conditions.
We can not trust Hyatt Charles de Gaulle: the room was taken at this hotel to enjoy an event of which he is a partner.