I am looking for an online site/program where I could refresh my french especially the french related to the hotel reception...
Do you maybe know such a site/program?
Here you can do exercises to understand french language in an hotel situation :
Duolingo is a pretty good site to learn a new language (not only french). https://www.duolingo.com/
There is a mobile app too, so you can practise everywhere.
It is not specialized for hotel trade though.